Preheat oven to 400 degrees F
Mix chili powder, paprika, garlic and onion powder, salt, oregano, lime juice, 2 tablespoons olive oil, and cumin, place in either a Ziploc bag or glass bowl with a lid. Marinate for at least 30 minutes
Using a large baking sheet, place peppers, onions, 2 tablespoons olive oil, and heavy pinch of salt, using hands, mix well
Add marinated chicken, diced tomates, and mix throughouly, and bake for 35-40 minutes, flipping half way through
Garnish as desired - I like guacomole, salsa, jalepenos and crunchy romaine lettuce