Preheat oven to 425 degrees F, and spray a large rimmed sheet pan with olive oil spray.
In a small bowl combine chili powder, cumin, garlic powder, paprika, salt and pepper.
Place chicken, bell peppers, and onion in a large mixing bowl. Drizzle olive oil, sprinkle seasoning, and mix well.
Pour chicken mixture onto the baking sheet pan and spread evenly.
Bake for 20-25 minutes or until chicken is cooked and vegetables are tender. Top with fresh lime juice and fresh chopped cilantro.
Serve in your favorite tortillas or lettuce. Enjoy!