Using a sharp knife, cut the pork belly into 3/4-inch cubes. I recommend cutting it into strips first and then in the opposite direction to create cubes.
1 pound pork belly
In a large mixing bowl or zip-top bag, add the pork belly cubes.
Add the pineapple juice, pineapple, brown sugar, soy sauce, adobo sauce, apple cider vinegar, chili powder, garlic, and cumin. Toss until well combined. Marinate for 4-6 hours.
1/3 cup canned pineapple juice, 1/4 cup diced pineapple, 3 Tablespoons brown sugar, 2 Tablespoons soy sauce, 2 Tablespoons adobo sauce, 1 Tablespoon apple cider vinegar, 1 teaspoon chili powder, granulated garlic, & cumin
After the pork has finished marinating, place the cubes in the air fryer basket. All of the pork cubes should fit in most large air fryers at once.
Air fry at 400 degrees for 10-12 minutes, shaking 2-3 times while cooking to rotate the cubes.
Air fry at 280 degrees for another 12-15 minutes, shaking a few times, or until the pork is cooked to your liking. It should have a slight char and be crispy but still have some fat intact. If it is tough, continue cooking it at 280 degrees until it is tender.