Stir 4 Tbsp. Parmesan Cheese Into Pasta Sauce. Spray Skillet With Cooking Spray And Heat 1 Min. Add Chicken And Cook Until Browned. Drain. Pour Pasta Sauce Over Chicken; Turn Breasts Over To Coat Both Sides With Sauce. Cover And Cook Over Medium Heat 10 Min. Or Until Done. Top With Mozzarella Cheese And Remaining 2 Tbsp. Parmesan Cheese. Let Stand 5 Min. Or Until Cheese Is Melted.