Stir 4 tablespoons Parmesan cheese into pasta sauce. Spray skillet with vegetable cooking spray and heat 1 minute. Add chicken and cook until browned. Drain. Pour pasta sauce over chicken; turn breast pieces over to coat both sides with sauce. Cover and cook over medium heat for 10 minutes or until done. Top with mozzarella cheese and remaining 2 tablespoons Parmesan cheese. Let stand 5 minutes or until cheese is melted. 6 servings.
This is so easy, and so good. Have made it several times, almost just like yours. I serve it over pasta of some sort usually, but at least once, I've cooked rice to add to the platter. Very good either way.