Pat salmon cubes completely dry with paper towels. This ensures crispy results.
In a large bowl, toss dried salmon with olive oil, garlic powder, smoked paprika, onion powder, salt, black pepper, and cayenne until evenly coated.
Preheat air fryer to 400°F for 3 minutes.
Arrange seasoned salmon in a single layer in air fryer basket, leaving space between pieces for air circulation.
Air fry for 8-10 minutes, shaking basket halfway through, until golden and internal temperature reaches 145°F.
While salmon cooks, whisk together mayonnaise, Thai sweet chili sauce, sriracha, honey, and lime juice until smooth.
Transfer hot salmon bites to a serving bowl and drizzle with bang bang sauce. Toss gently to coat.
Garnish with sliced green onions and sesame seeds. Serve immediately.