Step 1: Prepare the Fish and Air Fryer

1. Preheat Your Air Fryer: Set your air fryer to 400°F (200°C) and let it preheat for at least 5 minutes. This is a crucial step for achieving a crispy bottom crust.
2. Dry the Cod: Pat your cod fillets completely dry with paper towels. This is the single most important step for getting the coating to stick and the fish to become crispy. Moisture is the enemy of crispiness. If your fillets are particularly large, cut them into serving-sized portions (about 4-6 oz each).

Step 2: Set Up Your Dredging Station

You will need three shallow dishes or plates. A pie plate, a pasta bowl, or a shallow baking dish works perfectly.

1. Dish #1 (Flour): In the first shallow dish, whisk together the all-purpose flour, paprika, and black pepper.
2. Dish #2 (Egg): In the second shallow dish, crack the two eggs and whisk them thoroughly until the yolks and whites are completely combined.
3. Dish #3 (Panko-Parmesan): In the third shallow dish, combine the panko breadcrumbs, finely grated Parmesan cheese, garlic powder, dried parsley, and salt. Mix well to ensure the Parmesan and seasonings are evenly distributed throughout the breadcrumbs.

Step 3: Coat the Cod Fillets

Work with one fillet at a time to ensure each one is perfectly coated.

1. Dredge in Flour: Take one dry cod fillet and place it in the flour mixture. Turn it over to coat all sides lightly, then shake off any excess flour. The thin layer of flour gives the egg something to cling to.
2. Dip in Egg Wash: Transfer the flour-dusted fillet to the egg wash. Dip it on all sides, allowing any excess egg to drip off.
3. Press into Breading: Immediately place the egg-coated fillet into the panko-Parmesan mixture. Press the breading gently onto all surfaces of the fish to ensure a thick, even coating. This gentle pressure is key to making the crust adhere during cooking. Set the coated fillet aside on a clean plate or wire rack.
4. Repeat: Repeat the process with the remaining cod fillets.

Step 4: Air Fry to Crispy Perfection

1. Prepare the Basket: Lightly spray the preheated air fryer basket with olive oil spray or cooking spray to prevent sticking.
2. Arrange the Fish: Carefully place the breaded cod fillets in the air fryer basket in a single layer. Do not overcrowd the basket. If necessary, cook in two batches. Leaving space between the fillets allows the hot air to circulate freely, which is essential for even cooking and crisping.
3. Cook: Air fry at 400°F (200°C) for 10-12 minutes. The exact time will depend on the thickness of your fillets and the model of your air fryer. There is no need to flip the fish.
4. Check for Doneness: The cod is perfectly cooked when the crust is a deep golden brown and crispy, and the fish is opaque and flakes easily with a fork. The internal temperature should reach 145°F (63°C) on an instant-read thermometer.
5. Serve Immediately: Remove the crispy cod from the air fryer and serve immediately for the best texture.