Chicken Broccoli Alfredo Stuffed Shells

jar (16 oz) alfredo sauce

cooked chicken, shredded

cooked broccoli, chopped

shredded cheddar (or mozzaerlla) cheese

shredded parmesan

jumbo pasta shells, cooked

spaghetti sauce (optional, but I love the combination of alfredo with tomato sauce!)

Salt/Pepper to season (if needed)