Preheat your oven to 400°F (200°C) and line a baking sheet with parchment paper.

Pat the white fish fillets dry with a paper towel and season both sides generously with salt and pepper.

In a mixing bowl, combine breadcrumbs, grated Parmesan cheese, garlic powder, and melted butter until the mixture resembles wet sand.

Arrange the seasoned fish fillets on the prepared baking sheet and scoop the breadcrumb mixture onto each fillet, pressing it down gently.

Bake in the preheated oven for 15-20 minutes until the crust is golden brown and the fish flakes easily with a fork.

Let the fish rest briefly before garnishing with fresh parsley and serving immediately.