Creating delicious Sheet Pan Chicken Fajitas is simple when you follow these step-by-step instructions:

1. Preheat the Oven: Preheat your oven to 400°F (200°C). This will ensure a quick roasting time for the chicken and vegetables.
2. Prepare the Chicken and Vegetables: In a large mixing bowl, combine the chicken strips, sliced bell peppers, and sliced onion.
3. Add Seasoning: Drizzle the olive oil over the chicken and vegetables. Sprinkle the chili powder, cumin, paprika, garlic powder, onion powder, salt, and black pepper. Toss until everything is evenly coated with the oil and spices.
4. Spread on a Sheet Pan: Transfer the chicken and vegetable mixture to a large baking sheet, spreading it out in a single layer to ensure even cooking.
5. Roast in the Oven: Place the sheet pan in the preheated oven and roast for about 20-25 minutes, or until the chicken is cooked through and the vegetables are slightly charred and tender.
6. Check for Doneness: Make sure the internal temperature of the chicken reaches 165°F (74°C). This ensures it’s safe to eat.
7. Serve: Once done, remove the sheet pan from the oven and let it cool for a couple of minutes.
8. Garnish and Enjoy: Garnish with fresh cilantro and serve with lime wedges, alongside warm tortillas.

By adhering to these steps, you will achieve perfectly cooked chicken and vegetables that are bursting with flavor!