Prep the salmon. Set the air fryer to 400℉ (200℃). Pat your salmon filets dry with a paper towel.
Add the mustard. On each salmon filet, spread one teaspoon of mustard evenly in a thin layer.
Add the seasonings. Sprinkle each of the individual spices straight onto the salmon filet. It doesn't have to be an exact measurement. I start with salt and pepper, then coat generously with garlic powder and paprika. Finish with a quick spray of olive oil on top to keep the salmon filet moist.
Air fry. Add two salmon filets to the air fryer and cook for 8 to 10 minutes, until flaky with a fork. Then repeat with the remaining two salmon filets.
