Place the cod filets on a plate. Cover with olive oil.
Place the garlic powder, salt, and ground black pepper in a small bowl. Mix to combine.
Sprinkle both sides of the cod with the spice mixture.
Place the cod filets in the air fryer basket in a single layer. You may need to cook the cod in separate batches.
Air fry at 380°F/190°C for 8-10 minutes. The cod should reach an internal temperature of 145°F/63°C.
Serve with fresh parsley and lemon wedges.
Notes
My cod filets were about 7-8 ounces each and 1 inch thick. If you are using thinner cod filets, they will cook much more quickly. Start checking at the 6-minute mark to see if your fish has reached 145°F.
You can easily double this recipe to serve 4 people. I find my air fryer basket can usually fit 2-3 cod filets in it.
Adjust the seasonings to suit your tastes. Lemon pepper seasoning or Italian seasoning is delicious on cod.