Pat the pork loin dry with paper towels and gently score the rind in a criss cross pattern.
Coat the pork in olive oil.
Stir all of the spices for the rub together and press into the pork loin evenly. Allow this to rest for 10-15 minutes.
Set the air fryer to 360°F (182 °C) and preheat.
Place the pork roast in the air fryer basket, fat-side up and air fry for 40-50 minutes depending on the size of the roast. Use a thermometer to check the pork is cooked. 145°F (63°C) for medium or 160°F (71°C) for well-done.
Remove the pork from the air fryer and let it rest for 10 minutes before slicing. While the roast is resting make the gravy.
Melt the butter in a small saucepan over low heat. Sprinkle in the flour and stir continuously to create roux.
Remove from heat and stir in the chicken broth, heavy cream, Dijon mustard, maple syrup, garlic powder and salt. Return to low heat and bring to a low simmer for 2-3 minutes until it thickens.
Slice the roast and pour the gravy over.