Chicken Fajita Sheet Pan

Featured in: Quick Weeknight Flames

This sheet pan dish combines juicy chicken strips with vibrant bell peppers and red onions, all tossed in a zesty Tex-Mex spice blend. Roasted until tender and lightly charred, it's a colorful, flavorful meal that requires minimal cleanup. Ready in just over 40 minutes, it's ideal for busy evenings. Serve with warm tortillas or low-carb alternatives and top with fresh cilantro, lime wedges, and your favorite salsa or guacamole.

Simple prep and straightforward roasting delivers a balanced mix of protein and vegetables, enhanced by smoky paprika, cumin, and a touch of cayenne for optional heat. This gluten-free variation swaps tortillas for lettuce or cauliflower rice, offering a versatile and satisfying dish for any weeknight.

Updated on Tue, 23 Dec 2025 08:04:00 GMT
Sheet pan chicken fajitas bursting with savory chicken, peppers, and onions, sizzling from the oven. Save
Sheet pan chicken fajitas bursting with savory chicken, peppers, and onions, sizzling from the oven. | fireandbites.com

There's something about the sizzle of peppers hitting a hot pan that makes me drop everything else I'm doing that evening. I discovered this sheet pan version on a night when I had fifteen minutes and zero patience for babysitting multiple burners, and it completely changed how I think about weeknight cooking. The magic is in how the oven does all the work while you pour a drink and actually sit down—everything roasts together, the chicken stays juicy, and those peppers get just charred enough to taste like something special happened.

I made this for my sister's family on a random Thursday, and her kids actually asked for seconds without being prompted—that's when I knew I had something worth repeating. My brother-in-law, who is usually the "just give me a burger" type, was already planning how to make it at home, and now it's become his go-to when he wants to impress people without staying in the kitchen all evening.

Ingredients

  • Chicken breasts or thighs (600g): I use thighs when I have them because they're more forgiving and stay juicier, but breasts work beautifully if you watch them carefully and don't overcook past 25 minutes.
  • Bell peppers (one of each color): The mix of red, yellow, and green isn't just pretty—each color has a slightly different sweetness and texture, so you get more flavor complexity than using just one type.
  • Red onion: Red onions get sweeter as they roast and add this gorgeous caramel note that regular yellow onions don't quite deliver.
  • Olive oil: Don't skimp here; good oil carries all the spice flavors and helps everything brown instead of steam.
  • Chili powder, cumin, smoked paprika, garlic powder, onion powder, oregano: This spice combination is the soul of the dish—each one plays a specific role, and leaving any out changes the whole vibe.
  • Lime juice: Fresh lime is non-negotiable; bottled will taste thin and one-dimensional by comparison.
  • Tortillas and toppings: Warm your tortillas in the oven wrapped in foil for the last few minutes of cooking, and set out sour cream, salsa, and cilantro so everyone builds their own.

Instructions

Get Your Setup Ready:
Preheat the oven to 220°C and line your sheet with parchment paper or foil—this is the secret to effortless cleanup and prevents sticking. Having everything prepped before you start mixing makes the actual cooking feel incredibly smooth.
Build Your Marinade:
Whisk together olive oil, chili powder, cumin, paprika, garlic powder, onion powder, oregano, cayenne, salt, pepper, and fresh lime juice in a large bowl. You'll notice the spices bloom and the scent gets immediately inviting—that's when you know you're on the right track.
Coat Everything:
Add your sliced chicken, peppers, and onions to the marinade bowl and toss gently but thoroughly until everything glistens with that gorgeous spiced oil. The coating is what makes this work, so take a moment to make sure nothing is hiding underneath.
Spread and Roast:
Pour everything onto your prepared sheet in a single layer, giving the pieces room to roast instead of steam—this matters more than you'd think. Pop it in the preheated oven and set a timer for about 11–12 minutes so you can stir halfway through.
Check for Done-ness:
The chicken should be cooked through with no pink inside, and the peppers should have some caramelized edges. If things look like they need another few minutes, give them that time rather than pulling them out early.
Serve Right Away:
Transfer everything to a warm platter and bring it straight to the table with your warmed tortillas and favorite toppings lined up so everyone can build exactly what they want.
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My favorite moment with this recipe came when I made it for a friend who had just moved to the neighborhood, and she showed up thinking it would be a formal dinner. Instead, we threw everything together, ate straight from the sheet pan on my kitchen counter with margaritas, and ended up talking until midnight about nothing important.

The Sheet Pan Philosophy

There's something liberating about recipes that do the heavy lifting for you—this is the kind of cooking that reminds me that elegant doesn't have to mean complicated. I've learned that the best weeknight meals are the ones where you can actually enjoy the food instead of stressing about timing three different things on the stove, and sheet pan cooking has genuinely changed how I approach dinner when life is busy.

Playing with Variations

I've swapped in shrimp when I wanted something lighter and faster, used beef strips when I had them on hand, and even tried it with thick-cut tofu for a friend who doesn't eat meat—every version works beautifully as long as you respect the cooking times. Jalapeños added right on the pan roast beautifully and give you that spicy kick without being overwhelming, and I've also experimented with different colored onions and peppers based on what looked good at the market that week.

Beyond Just Dinner

This recipe has become my secret weapon for meal prep—I make a double batch and eat it for lunch all week with avocado, or use it as a base for nachos, quesadillas, or even salads. The leftovers actually taste better the next day because the flavors settle in and deepen.

  • Warm your tortillas in the residual oven heat wrapped in foil while you plate everything up for that perfect soft, pliable texture.
  • Make a double batch and save half for reinvention throughout the week—it's endlessly adaptable and never boring.
  • Set out all your toppings ahead of time so people can customize their own and feel like they're part of the experience.
A delicious image of perfectly roasted chicken fajita vegetables, ready to be wrapped in a warm tortilla. Save
A delicious image of perfectly roasted chicken fajita vegetables, ready to be wrapped in a warm tortilla. | fireandbites.com

This sheet pan meal has become the kind of recipe I return to again and again because it never lets me down, and somehow it always feels like a celebration even on the most ordinary Tuesday. There's real joy in feeding people something that tastes this good with this little effort.

Common Questions

Can I use chicken thighs instead of breasts?

Yes, chicken thighs can be used and provide a juicier, more flavorful result while roasting evenly on the sheet pan.

How do I achieve the best roasted vegetables?

Slice bell peppers and onions evenly and roast at high heat (425°F/220°C) to get tender vegetables with slight char and sweetness.

What are good alternatives to tortillas for serving?

Lettuce leaves or cauliflower rice make excellent low-carb serving options that complement the spiced chicken and veggies well.

Can this dish be made spicier?

Absolutely, add sliced jalapeños or increase the cayenne pepper in the marinade to suit your heat preference.

What sides or drinks pair well with this meal?

A crisp Mexican lager or a light white wine like Sauvignon Blanc enhances the meal's fresh and smoky flavors.

Chicken Fajita Sheet Pan

Juicy chicken and bell peppers roasted together with Tex-Mex spices for a flavorful, easy dinner.

Setup Duration
15 min
Time at Heat
25 min
Complete Duration
40 min
Created by Logan Hayes


Skill Level Easy

Cultural Background Tex-Mex

Output 4 Portion Count

Special Diet Info No Gluten

What You'll Need

Proteins

01 1.3 pounds boneless, skinless chicken breasts or thighs, sliced into strips

Vegetables

01 1 large red bell pepper, sliced
02 1 large yellow bell pepper, sliced
03 1 large green bell pepper, sliced
04 1 large red onion, sliced

Marinade & Seasoning

01 3 tablespoons olive oil
02 2 teaspoons chili powder
03 1 teaspoon ground cumin
04 1 teaspoon smoked paprika
05 ½ teaspoon garlic powder
06 ½ teaspoon onion powder
07 ½ teaspoon dried oregano
08 ¼ teaspoon cayenne pepper (optional)
09 1 teaspoon salt
10 ½ teaspoon ground black pepper
11 Juice of 1 lime

To Serve

01 8 small flour or corn tortillas, warmed
02 Fresh cilantro, chopped (optional)
03 Lime wedges
04 Sour cream, salsa, or guacamole (optional)

Method Steps

Phase 01

Preheat oven: Set oven to 425°F and line a large baking sheet with parchment paper or foil for easy cleanup.

Phase 02

Prepare marinade: In a large bowl, whisk together olive oil, chili powder, cumin, smoked paprika, garlic powder, onion powder, oregano, cayenne pepper, salt, pepper, and lime juice.

Phase 03

Combine ingredients: Add chicken strips, sliced bell peppers, and red onion to the bowl. Toss to coat evenly with the marinade.

Phase 04

Arrange on baking sheet: Spread the marinated chicken and vegetables in a single layer across the prepared baking sheet.

Phase 05

Roast: Roast in the preheated oven for 22 to 25 minutes, stirring halfway through, until chicken is cooked through and vegetables are tender with slight char.

Phase 06

Serve: Remove from oven and serve immediately with warm tortillas and desired toppings.

Kitchen Tools Needed

  • Large baking sheet
  • Mixing bowl
  • Knife and cutting board
  • Tongs or spatula

Allergy Details

Always review ingredients individually for potential allergens and seek professional medical guidance if uncertain.
  • Contains gluten if flour tortillas are used.
  • Dairy may be present in optional toppings such as sour cream and cheese.
  • Check packaged tortillas and spice blends for hidden allergens.

Dietary Information (Single Portion)

Values shown are estimates only - please consult healthcare providers for specific dietary advice.
  • Energy Content: 380
  • Fats: 14 g
  • Carbohydrates: 30 g
  • Proteins: 32 g