OPTION 1
Meanwhile, place the frozen fish fillets well apart on a lightly oiled baking sheet. Put the breadcrumbs in a bowl, then add the lemon zest, Parmesan, parsley and 1 tbsp of oil. Season with black pepper and mix together.
Put the fish fillets on the top shelf. Bake for another 5 mins.
Drain off any liquid released from the fish then divide the breadcrumb mixture evenly between the fillets, pressing down firmly onto the top of each one with the back of a spoon. Return to the oven and leave everything to cook for another 15-18 mins, or until the crumbs are golden, the fish is opaque and the potatoes are golden and crisp. Serve with peas and lemon wedges on the side.
OPTION 2
https://www.youtube.com/watch?v=tgpL5pGubjU&list=PL9asByql5ztzykXpr25ci6VZSXMfBMZkc&index=156