In a large pot, place pork belly, bay leaves, black pepper, red onion, garlic and salt. Stir to combine.
Turn on heat to medium high and bring to a boil.
Reduce heat to medium an continue to boil for 45 - 60 minutes until pork is fork tender.
Layer paper towels on a chopping board and place cooked pork belly on top. Pat dry.
Preheat air fryer at 400F for 5 minutes.
Cook pork belly in 2 batches so pieces do not overlap. This allows for even cooking.
Cook for 15 minutes at 400F for 15 minutes. Flip.
Cook the other side for another 15 minutes.
Serve with lechon sauce or spicy vinegar and rice.