To make this Fried Mozzarella Sticks Recipe gluten free, replace the Italian-style breadcrumbs with certified gluten-free seasoned breadcrumbs or gluten-free panko mixed with Italian seasoning. Also verify that the Parmesan cheese and mozzarella sticks are free from gluten-containing additives or anti-caking agents if needed for strict dietary requirements. Fry in clean oil that has not been used for gluten-containing foods to avoid cross-contact.