To make this Fried Eggplant gluten-free, replace the all-purpose flour with a certified gluten-free all-purpose flour blend or rice flour. Use certified gluten-free panko breadcrumbs or gluten-free breadcrumbs in place of traditional panko. Confirm that the Parmesan cheese, seasonings, vegetable oil, marinara sauce, and all packaged ingredients are labeled gluten-free and free from cross-contact. Use clean bowls, utensils, tongs, trays, skillets, and prep surfaces to prevent gluten contamination.