Prepare the shrimp by patting them dry with paper towels.
In a bowl, combine flour, garlic powder, paprika, and cayenne pepper.
In a separate bowl, combine buttermilk and shrimp, allowing them to marinate for 15 minutes.
Preheat the air fryer to 400°F (200°C).
Dredge each shrimp in the flour mixture, dip it back into the buttermilk, then coat with panko breadcrumbs.
Place the shrimp in a single layer in the air fryer basket, ensuring they aren't overcrowded.
Air fry the shrimp for about 8-10 minutes, flipping halfway through.
While the shrimp cooks, combine mayonnaise and sweet chili sauce to create the Bang Bang sauce.
Warm the tortillas in a skillet for about 30 seconds on each side.
Assemble tacos by placing shrimp in tortillas, drizzling with Bang Bang sauce, and garnishing with cilantro.