01 - Preheat the oven to 425°F (220°C). Line a large sheet pan with parchment paper or foil for easy cleanup.
02 - In a large bowl, combine olive oil, chili powder, ground cumin, smoked paprika, dried oregano, garlic powder, onion powder, salt, and black pepper. Stir to blend.
03 - Add the sliced chicken, bell peppers, red onion, and minced garlic to the spice mixture. Toss thoroughly to coat evenly.
04 - Spread the chicken and vegetable mixture in a single layer on the prepared sheet pan.
05 - Roast for 20 to 25 minutes, stirring halfway through, until the chicken is fully cooked and vegetables are tender with slight charring.
06 - Remove from oven, squeeze fresh lime juice over the mixture, and sprinkle with chopped cilantro.
07 - Serve hot with warmed tortillas and optional toppings such as sour cream, guacamole, or salsa.