Preheat the oven to 425 F.
Mix the bread crumbs, oil, parsley, lemon juice, garlic, salt and mustard together in a small bowl.
Cover a baking sheet with foil, spray or rub a bit of oil on it so the fish won't stick, then lay the fish down on it. Cover the fish with bread crumbs.
Bake 8-10 minutes, depending on how thick the fish is. It should flake easily with a fork.
If you'd like, turn your broiler on when the fish is done and let the bread crumbs gets a little crispy--just a minute or two.
Serve with lemon wedges.