To make gluten-free pastelitos, substitute the traditional empanada discos with gluten-free empanada dough, which can often be found in specialty stores or made at home using a blend of gluten-free all-purpose flour and xanthan gum. Ensure that all seasonings, particularly the sazón and sofrito, are certified gluten-free. When frying, use clean oil that has not been cross-contaminated with gluten-containing products.