Grease the Air Fryer Basket with cooking spray and then slide inside.
Adjust the temperature of Air Fryer to 400 °F to preheat for 5 minutes.
In a bowl, mix together the cornmeal, Cajun seasoning, paprika, garlic powder, and salt.
Add the catfish fillets and coat with the mixture evenly.
Now coat each fillet with oil.
After preheating, arrange the fish fillets into the greased Air Fryer Basket in a single layer.
Slide the basket into Air Fryer and set the time for 13-14 minutes.
While cooking, flip the fish fillets once halfway through.
After cooking time is finished, remove the fish fillets from Air Fryer and serve.