Add the tomatoes, basil, garlic, olive oil, salt and pepper (to taste) to a mixing bowl. Stir together and set aside.
In a small bowl add the garlic powder, onion powder, basil, oregano, salt, and pepper. Mix the seasonings together then season both sides of the chicken breast.
Heat a nonstick skillet over medium heat. Add the chicken breast and cook for 3 minutes, then flip. Top the chicken with the cheese slices, cover the pan and cook for 3 minutes, or until the internal temperature reaches 165 degrees F. (Note: if your chicken breasts are thicker than 1/4 inch it will need additional cooking time.)
Place the chicken breasts on a plate and top with the tomato mixture.