01 - Preheat the oven to 410°F. Line a baking tray with parchment paper and lightly oil the surface to prevent sticking.
02 - Pat fish fillets thoroughly dry with paper towels to ensure proper crumb adhesion. Season both sides generously with salt and freshly ground black pepper.
03 - Arrange three shallow bowls: place flour in the first bowl, beaten eggs in the second bowl, and combine all crumbing mixture ingredients (panko, dill, lemon zest, garlic powder, paprika, salt, and pepper) in the third bowl.
04 - Dip each seasoned fish fillet first in flour, shaking off excess. Then coat in beaten egg, allowing excess to drip off. Finally press firmly into the crumb mixture, ensuring even and complete coverage.
05 - Place coated fillets on the prepared baking tray in a single layer. Drizzle or brush olive oil evenly over each fillet to promote golden browning.
06 - Bake for 15-20 minutes until the fish is completely cooked through and the crumb coating is golden brown and crispy. Fish should reach an internal temperature of 145°F.
07 - While fish bakes, combine Greek yoghurt, diced cucumber, chopped dill, lemon juice, lemon zest, minced garlic, salt, and pepper in a mixing bowl. Stir thoroughly until well incorporated. Refrigerate until serving.
08 - Transfer hot baked fish to serving plates. Top each fillet with a generous portion of cucumber yoghurt sauce. Accompany with fresh lemon wedges for squeezing over the fish.