Preheat the air fryer to 400°F
Pat the pork tenderloin dry with paper towels
Trim any silver skin or excess fat
Rub the tenderloin with oil
Season with salt, pepper, garlic powder, and paprika
Place the pork tenderloin in the air fryer basket
Cook for 18 to 22 minutes, turning halfway through
Check the internal temperature with a meat thermometer
Remove when the thickest part reaches 145°F
Let the pork rest for 5 to 10 minutes before slicing
Slice and serve