Set your air fryer to 400°F (200°C) and let it heat up for about 3–5 minutes. Preheating helps ensure the salmon cooks evenly and gets that golden topping.

Pat the salmon fillets dry with paper towels. Season lightly with salt and pepper on both sides. Place them on a plate or board, skin-side down if using skin-on.

In a small bowl, mix together the mayonnaise, minced garlic, grated parmesan, and panko breadcrumbs. Stir until it forms a thick, spreadable paste. The mixture should hold together without being runny.

Spoon the garlic-parmesan mixture onto the top side of each salmon fillet. Use the back of a spoon to spread it evenly, pressing slightly to help it stick. Drizzle the top lightly with olive oil or spritz with cooking spray.

Place the fillets into the air fryer basket, crust side up. Cook at 400°F for 8–10 minutes, depending on the thickness of your salmon. The topping should be golden brown and the fish should flake easily with a fork.

Remove the salmon from the air fryer and let it rest for a minute. Serve with lemon wedges for a little citrusy zing. Pair with veggies, rice, or a simple salad for a full meal.