Preheat the air fryer to 400°F (200°C) for 5 minutes.
In a medium bowl, combine the melted butter, minced garlic, lemon juice, lemon zest, kosher salt, black pepper, and crushed red pepper flakes. Stir well to create the scampi sauce.
Add the peeled and deveined shrimp to the bowl and toss to coat evenly with the scampi sauce.
Lightly brush the air fryer basket with olive oil to prevent sticking.
Place the shrimp in a single layer in the air fryer basket. You may need to cook in batches depending on the size of your air fryer.
Cook the shrimp at 400°F (200°C) for 6 to 8 minutes, shaking the basket halfway through cooking, until the shrimp are pink, opaque, and cooked through.
Remove the shrimp from the air fryer and transfer to a serving dish.
Drizzle any remaining scampi sauce from the bowl over the cooked shrimp.
Sprinkle the chopped fresh parsley over the shrimp for garnish.
Serve immediately with lemon wedges or over cooked pasta or rice if desired.