Preheat your air fryer to 400°F (200°C) for 5 minutes.
Remove the fish nuggets from the box and put them in a single layer on your hot air fryer tray or air fryer basket. I needed two air fryer trays to fit them all.
Air fry the nuggets for 5 minutes, at 400°F (200°C). Then flip the nuggets, return the trays to their original position in the air fryer, and air fry and additional 5 minutes.
You can flip them once more and air fry 1-2 minutes if they’re still not crispy enough.
Remove the nuggets on the top rack from the air fryer oven. Move the nuggets that were on the bottom rack to the top rack. Let the fish nuggets air fry 3-4 more minutes, until they finish crisping up.
Check the fish nuggets with a meat thermometer to ensure they've reached a minimum safe internal temperature of 145°F (63°C). Add additional air frying time if needed.
After cooking, let the fish nuggets rest for 1-2 minutes to crisp up more. If they’re too oily after cooking, try blotting them with a paper towel before serving with dipping sauce.