To make this recipe gluten-free, substitute the all-purpose flour with a certified gluten-free flour blend or cornstarch (use 2 tablespoons cornstarch mixed with 2 tablespoons water to form a slurry). Additionally, ensure the gnocchi used is labeled gluten-free, as many store-bought varieties contain wheat flour. Confirm that your chicken broth and seasonings are certified gluten-free to prevent cross-contamination.