Pat the pork belly cubes dry with paper towels to help them crisp in the air fryer.
1½ lbs. (680 g) pork belly
In a large bowl, stir together the soy sauce, brown sugar, sesame oil, garlic powder, paprika, black pepper, and salt.
1 tbsp (15 ml) low-sodium soy sauce, 1 tbsp (12 g) light brown sugar, 1 tsp (5 ml) toasted sesame oil, 1 tsp (3 g) garlic powder, 1 tsp (2 g) paprika, ½ tsp (1 g) ground black pepper, ¼ tsp (1.5 g) table salt
Add the pork belly cubes and toss to coat evenly. Let sit for 30 minutes at room temperature or refrigerate overnight for more flavor.
While the pork is marinating, make the dipping sauce. In a small bowl, mix together the Thai sweet chili sauce, lime juice, soy sauce, and grated ginger until smooth. Garnish with sesame seeds and sliced green onions if desired, then set aside.
3 tbsps (45 ml) Thai sweet chili sauce, 1 tbsp (15 ml) fresh lime juice, 1 tsp (5 ml) low-sodium soy sauce, 1 tsp (2 g) freshly grated ginger root, sesame seeds, sliced green onions
Preheat the air fryer to 400°F (200°C) for 3 to 5 minutes.
Arrange the pork belly in a single layer in the air fryer basket, leaving space between each piece for airflow.
Air fry for 15 to 20 minutes, shaking or flipping halfway through, until golden and crisp.
For extra crispy edges, cook an additional 3 to 5 minutes or until the fat renders and the edges start to darken.
Transfer to a plate and serve hot with the dipping sauce, or over rice or noodles.