To make this Shrimp Fettuccine Alfredo gluten-free, replace the regular fettuccine noodles with certified gluten-free fettuccine or another gluten-free pasta. Confirm that the chicken broth, Parmesan cheese, heavy cream, whole milk, butter, shrimp, spices, and seasonings are certified gluten-free or labeled free from gluten-containing additives. Some broths and pre-grated cheeses may contain gluten-based thickeners or anti-caking agents, so check labels carefully. Use clean cookware, utensils, measuring tools, and prep surfaces to prevent gluten cross-contact.