Tip: Italian cheese blend can also be used as a substitute for the Parmesan and mozzarella cheeses.
Preheat the oven to 350 degrees. Prepare two 9x13 casserole dishes with nonstick cooking spray.
In a large mixing bowl, combine the sauce, cooked ziti, Parmesan cheese, and chicken. Transfer to the two casserole dishes, dividing evenly, and top with mozzarella cheese.
Bake for 30 minutes or until the edges are bubbling and the cheese has melted.
How to freeze: After assembling, cover tightly with aluminum foil and freeze for up to 3 months. Thaw in the refrigerator overnight. If using glass baking dishes, place them on the counter as the oven preheats. Remove the aluminum foil. Follow the above instructions to bake.