Preheat an air fryer to 400 degrees F (200 degrees C).
Combine ground pork, water chestnuts, shiitake mushrooms, sesame oil, soy sauce, and Sriracha in a large skillet over medium-high heat. Cook until pork is no longer pink, about 6 minutes. Remove from heat and let sit until cool enough to handle.
Lay out 8 dumpling wrappers on a clean work surface. Place a heaping teaspoonful of pork mixture in the middle of each wrapper. Pull both sides up like a taco and pinch the tops until sealed.
Cook in batches in the pre-heated air fryer for 3 minutes. Use tongs to flip the potstickers and cook 3 minutes more. Transfer to a paper-towel lined plate. Repeat with remaining dumpling wrappers and filling.