Pat salmon fillets dry with a paper towel, then rub each fillet with oil. Sprinkle with salt and pepper generously, then sprinkle evenly with paprika and garlic powder if using.
Place in the basket of the air fryer, skin side down, and cook for 8-9 minutes. Check salmon with a fork to make sure it's cooked to your liking, then remove from air fryer.
Squeeze cooked salmon with lemon and sprinkle with parsley and enjoy!