What temperature do you cook chicken fajitas in a sheet pan?

I found that 425°F (218°C) was the sweet spot. The high heat helped the chicken cook through while giving the peppers and onions that light char on the edges. Anything lower and you won’t get the same roasted flavor.

What do you marinate chicken in for fajitas?

For this version, I didn’t use a long marinade. Instead, I tossed the chicken in olive oil, lime juice, and the spice blend just before roasting. It coated the strips beautifully and gave them plenty of flavor. If you want an extra boost, you could let the chicken sit in the mixture for 30 minutes before cooking, but it’s not essential.

What cut of chicken do you use for fajitas?

I used boneless, skinless chicken breasts because they cook quickly and stay lean, but I’ve also tried thighs before. Thighs come out juicier and are a little more forgiving if you accidentally leave them in the oven a few extra minutes. It really comes down to your preference—both work wonderfully.

How long to cook chicken sheet pan fajitas?

About 20–25 minutes was perfect in my oven. I gave everything a toss halfway through to make sure the chicken cooked evenly and the vegetables roasted on all sides. By the time the timer went off, the chicken was juicy, and the peppers were tender with just the right amount of char.

Sheet Pan Chicken Fajitas Recipe

Name: Sheet Pan Chicken Fajitas
Prep time: 10 min
Cook time: 25 min
Total time: 35 min
Yield: 4-6 servings
Cuisine: Mexican, Tex-Mex
Ingredients: 1.5 lbs boneless, skinless chicken breasts or thighs, sliced into strips; 3 bell peppers (red, yellow, green), sliced; 1 large red onion, sliced; 2 tablespoons olive oil; 2 teaspoons chili powder; 1 teaspoon smoked paprika; 1 teaspoon cumin; 1 teaspoon garlic powder; 1 teaspoon onion powder; ½ teaspoon dried oregano; ¼ teaspoon cayenne pepper (optional); 1.5 teaspoons salt; ½ teaspoon black pepper; Juice of 1 lime; Fresh chopped cilantro (for garnish); Flour or corn tortillas, warmed; Optional toppings: sour cream, guacamole, salsa, shredded cheese

Description

Sheet Pan Chicken Fajitas feature tender chicken strips, vibrant bell peppers, and sweet red onions, tossed in a smoky, zesty spice blend and roasted to perfection for a quick, flavorful, and fuss-free meal perfect for weeknights or casual dinners.

Ingredients

1.5 lbs boneless, skinless chicken breasts or thighs, sliced into strips

3 bell peppers (red, yellow, green), sliced

1 large red onion, sliced

2 tablespoons olive oil

2 teaspoons chili powder

1 teaspoon smoked paprika

1 teaspoon cumin

1 teaspoon garlic powder

1 teaspoon onion powder

½ teaspoon dried oregano

¼ teaspoon cayenne pepper (optional)

1.5 teaspoons salt

½ teaspoon black pepper

Juice of 1 lime

Fresh chopped cilantro (for garnish)

Flour or corn tortillas, warmed

Optional toppings: sour cream, guacamole, salsa, shredded cheese

Cook Mode Prevent your screen from going dark

Instructions

Preheat the oven: Set your oven to 425°F (218°C). Place an empty sheet pan inside to preheat as well.

Prep the chicken and veggies: Slice chicken, bell peppers, and onion into even strips for consistent cooking.

Make the seasoning: Mix chili powder, cumin, paprika, garlic powder, onion powder, oregano, cayenne, salt, and pepper in a bowl.

Toss ingredients: In a large bowl, combine chicken and veggies with olive oil, lime juice, and seasoning. Mix until fully coated.

Roast: Spread everything onto the hot sheet pan in a single layer. Roast for 20–25 minutes, tossing halfway through, until chicken is cooked through and vegetables are tender and slightly charred.

Serve: Remove from oven and garnish with fresh cilantro. Serve in warm tortillas with your favorite toppings.

Prep Time: 10 min
Cook Time: 22–25 min
Category: Main Dish
Method: Sheet Pan
Cuisine: Homemade