Preheat oven to 400 degrees.
Mix the spice ingredients in a small bowl. (Save extra in an old spice jar or ziploc bag for another meal).
Slice the onion and peppers into thin strips.
Spray a 9x13 baking pan with nonstick spray and place the vegetables in the pan, then place the chicken or steak on top. Drizzle the olive oil over the meat and vegetables, then sprinkle the spice mixture over the top. Use a spoon to stir everything up, then place in the oven and bake for about 40 minutes.
Once it's done, use two forks and pull the chicken into smaller pieces in the pan. Then give it a good stir so that all those yummy spices cover all of the chicken.