Preheat oven to 400 degrees F.
In a medium mixing bowl add the tomatoes, feta cheese, red onion, and garlic. Season with salt and pepper, then mix together.
In a small bowl mix together the garlic powder, onion powder, oregano, parsley, basil, and thyme.
Spray a baking pan with olive oil spray. Add the chicken breasts and season them with salt and pepper. Also season the chicken with the garlic powder mix.
Pour the tomato mixture over the chicken.
Bake 25-30 minutes or until chicken has an internal temperature of 165 degrees F.