Easy Chicken Parmesan

1 jar spaghetti sauce
6 T Parmesan cheese
6 small boneless skinless chicken breasts (1 1/2 lbs.)
1 1/2 cups mozzarella cheese

Preheat oven to 375F.  Pour sauce into 9x13 baking dish.  Carefully stir in 4T (1/4 cup) of the Parmesan cheese.  Add Chicken; turn to evenly coat both sides with sauce.  Cover with foil.  Bake 30 min.  Uncover.  Top with mozzarella cheese and remaining 2T Parmesan cheese; continue baking 5 min. or until chicken is cooked through and cheese is melted.  Serve over hot cooked pasta if desired.  Makes 6 servings.