To make this One-Pot Chicken & Dirty Rice Recipe gluten free, verify that the andouille sausage and chicken broth are certified gluten free or clearly labeled gluten free. Confirm that all dried spices, seasonings, and packaged ingredients are free from gluten-containing additives. Long-grain rice is naturally gluten free, but check packaging for cross-contact warnings if needed. Use clean cookware, utensils, and cutting boards to prevent cross-contact with gluten-containing foods.