For even cooking, ensure chicken pieces are cut uniformly. Substitute smoked paprika with regular paprika if desired. Olive oil spray imparts extra flavor but any neutral oil is suitable. Always air fry in a single layer for optimal crispiness, cooking in multiple batches if required. To make gluten-free nuggets, simply use gluten-free panko breadcrumbs. Store leftovers in an airtight container in the refrigerator for up to three days. Fully cooked nuggets may be frozen for up to three months; thaw before reheating. To reheat, set the air fryer to 400°F and warm nuggets for 4 to 8 minutes, or until thoroughly heated.