To make this Cheesy Chicken Rigatoni gluten free, use certified gluten-free rigatoni or another gluten-free pasta shape. Verify that the cream of chicken soup, cheese soup, evaporated milk, shredded cheeses, parmesan cheese, garlic, and all packaged ingredients are labeled gluten free. Cook the pasta according to the gluten-free package directions, as gluten-free pasta can soften quickly. Use clean utensils, cookware, and baking dishes to avoid cross-contact with gluten-containing foods.