Preheat oven to 450°F
In a small bowl, combine garlic powder, onion powder, chili powder and salt.
To make 4 chicken breasts, cut the large chicken breasts in half.
Olive oil should be applied to both sides of the chicken breasts. Apply the seasoning mix to both sides of the chicken breasts. Make sure you coat all sides. Put the seasoned chicken breasts into a baking dish.
Add half a tablespoon butter to each chicken breast. Bake for 18 minutes. Bake for an additional 4-5 minutes.
Take out the chicken breasts and let them rest for five minutes before serving.