This baked chicken parmesan starts with parmesan-coated chicken breasts. The breaded, oven-fried chicken is then baked with prepared spaghetti sauce and shredded mozzarella cheese. Of course, you can use your own homemade spaghetti sauce or marinara. This is an easy dinner to prepare, and you can keep it relatively low in fat with low-fat mozzarella or the lower amounts of cheese. If you're short on time, use seasoned fine dry bread crumbs and a little parmesan for the coating. One standard serving of chicken is about 4 ounces, so two or three large chicken breast halves (8-ounce or larger) would be enough for four people. The quality of the cheese makes a difference. Freshly shredded parmesan will have much more flavor than pre-shredded parmesan. It's worth buying a wedge of good parmesan and grating it immediately before use. For a full and satisfying dinner, serve the chicken and spaghetti with a tossed salad and garlic bread.