Preheat the air fryer to 400°F (200°C).
In a small bowl, mix together the olive oil, garlic powder, smoked paprika, salt, and black pepper. Rub this mixture evenly over the salmon fillets.
Place the seasoned salmon fillets in the air fryer basket in a single layer. Cook for 10-12 minutes, or until the salmon is cooked through and flakes easily with a fork.
While the salmon is cooking, prepare the bang bang sauce by whisking together the mayonnaise, sweet chili sauce, sriracha, and lime juice in a separate bowl until smooth.
Once the salmon is done, remove it from the air fryer and drizzle the bang bang sauce over the top.
Garnish with sliced green onions and sesame seeds before serving.