Do not overcrowd the air fryer basket — cook meatballs in batches for the crispiest results. Always preheat the air fryer before adding the meatballs. Add the glaze only after the meatballs are fully cooked to prevent the honey from burning. For extra crispy meatballs, ensure the panko is not substituted with regular breadcrumbs if possible. An instant-read thermometer is the most reliable way to confirm doneness.