1Pat the fish fillets dry with paper towels. Season both sides with salt and pepper.
2Set up breading station: place flour in a shallow dish, beat egg in another dish, and panko in a third dish.
3Coat each fillet in flour, shaking off excess. Dip in beaten egg, then in panko, pressing gently to adhere.
4Lightly spray both sides of the breaded fish with olive oil spray.
5Preheat air fryer to 180°C (350°F) for 3 minutes.
6Place fish fillets in the air fryer basket in a single layer, leaving space between them. Cook for 10-12 minutes, flipping halfway, until golden and crispy and internal temperature reaches 63°C (145°F).
7While fish cooks, make remoulade: in a small bowl, mix mayonnaise, Dijon mustard, lemon juice, chopped capers, and fresh dill. Stir well.
8Boil sea asparagus in salted water for 1-2 minutes, then drain and rinse under cold water. Pat dry with paper towels.
9To serve, arrange crispy fish on plates alongside sea asparagus. Top fish with remoulade or serve on the side.