Coat the Fish: In a shallow dish, mix together 1 cup panko, ½ cup grated Parmesan cheese, 1 teaspoon garlic powder, 1 teaspoon lemon zest, and salt and pepper (about ½ teaspoon of each). In another bowl, whisk together 2 large eggs and 1 tablespoon Dijon mustard until well combined. Prepare your fish fillets by patting them dry with paper towels.
Dredging Process: Begin the dredging process by coating one fish fillet in ½ cup all-purpose flour, ensuring it is fully covered. Next, dip the floured fish into the egg mixture, allowing any excess to drip off. Finally, coat the fish in the panko mixture, pressing gently to adhere the crumbs. Repeat with all fillets.
Cooking the Fish: In a large skillet, heat 2 tablespoons olive oil over medium-high heat. Once the oil is hot, carefully add the breaded fish fillets to the skillet. Cook for 3-4 minutes on each side, or until golden brown and flaky. Transfer the cooked fish to a paper towel-lined plate to drain excess oil.
Prepare the Zesty Sauce: In a small bowl, combine ½ cup mayonnaise, 2 tablespoons chopped fresh dill, 1 tablespoon lemon juice, 1 teaspoon lemon zest, and 1 minced clove of garlic. Season with salt and pepper to taste. Mix well until creamy and fully combined.
Serving the Dish: To serve, drizzle the Zesty Lemon Dill Sauce over the crispy fish fillets. Garnish with additional fresh dill or parsley and serve with lemon wedges on the side. This dish pairs beautifully with roasted veggies, a fresh salad, or fluffy rice!