In a mixing bowl, combine mayonnaise, sweet chili sauce, sriracha, honey, and lime juice. Whisk until smooth and homogenous. Set the sauce aside.
In a separate large bowl, add the cubed salmon pieces. Drizzle with olive oil, then sprinkle in garlic powder, onion powder, smoked paprika, salt, black pepper, and optional cayenne pepper. Gently toss the salmon to evenly coat with the seasonings.
Preheat your air fryer to 400°F (200°C) for about 3 minutes to ensure even cooking.
Arrange the seasoned salmon pieces in a single layer in the air fryer basket. Be careful not to overcrowd—cook in batches if needed. Air fry for 8 to 10 minutes, shaking the basket halfway through, until the exterior is crisp and the fish is cooked through.
Once done, transfer the salmon bites to a serving dish. Lightly drizzle with the prepared Bang Bang sauce and offer additional sauce on the side for dipping.