Separate cornstarch, egg white and panko into three separate bowls.
Coat shrimp with cornstarch and set aside on a paper plate.
Dip and coat shrimp in egg white, then transfer to panko, pressing the shrimp into the crumbs to coat evenly on both sides..
Place shrimp in a single layer in the air fryer basket.
Spray or coat top of shrimp with avocado oil. Air fry for 5 minutes at 350 degrees, flip shrimp over, spray the other side with oil, and air fry for another 2 minutes until golden brown. You may need to do it in batches depending on the size of the air fryer basket.
While shrimp are cooking, prepare the sauce. In a bowl that’s big enough to fit all shrimp after they’re cooked, whisk together mayonnaise, chili sauce and Sriracha.
Once shrimp are done, carefully toss shrimp with sauce.
Serve immediately. Garnish with green onions if you choose.