01 - Rinse raw shrimp under cool water and pat dry with paper towels.
02 - In a large bowl, whisk together buttermilk and egg until well blended.
03 - In a separate dish, mix flour, cornstarch, garlic powder, ground paprika, salt, and black pepper until evenly incorporated.
04 - Dip each shrimp into the buttermilk mixture, then coat thoroughly in the seasoned flour mixture, gently shaking off excess.
05 - Lightly spray air fryer basket with non-stick cooking spray and evenly arrange shrimp in a single layer.
06 - Air fry at 200°C (400°F) for 8-10 minutes, turning halfway through, until shrimp are golden and crisp.
07 - In a small bowl, combine mayonnaise, sweet chili sauce, Sriracha, granulated sugar, and lime juice. Stir until smooth and creamy.
08 - Immediately toss cooked shrimp with Bang Bang sauce until each piece is evenly coated.
09 - Arrange shrimp on serving platter and garnish with sliced green onions before serving.