Begin by preheating the Ninja Foodi or Air Fryer to 390*F for 5 minutes, if using the Ninja Foodi use the Air Crisp function.
Season the pork loin with salt, pepper, and any other seasoning of your choice.
Place it in the basket of the Ninja Foodi or Air Fryer.
Coat with cooking oil spray of your choice (Grapeseed, Coconut, Etc.).
Cook at 390*F for 20 minutes using the Air Crisp function of the Ninja Foodi or until the internal temperature reaches at least 145*F.
Serve with cooked brown gravy.
Video
Notes
Our pork tenderloin came with 2, you can do 2 for this recipe at the same time or as many as will fit.Cook time will vary depending on the size of your pork loin.