Preheat oven to 425 degrees F.
Bring a large pot of lightly salted water to boil. Add grated potatoes, boil for 30 seconds, and then drain. Plunge into an ice bath and drain immediately. Spread the potatoes on a plate or baking sheet to dry. Toss with the melted butter, salt, pepper, cheese, and lemon zest. Coat each filet with potato, lightly pressing with fingertips.
Place the fish on a lightly oiled baking sheet and roast for 15 to 20 minutes in the oven until lightly browned and cooked through.
This recipe was provided by a chef, restaurant or culinary professional. It has not been tested for home use.