1. Preheat oven to 400°. In a small pan melt the butter and add the lemon juice. In a separate shallow bowl, mix flour and seasonings. Dip fillets in lemon juice mixture, then in flour mixture to coat both sides oh so lightly; shake off excess.
2. Place in a baking dish coated with cooking spray or place parchment paper on the bottom. Drizzle with remaining lemon juice and butter mixture. Bake 15 minutes or until fish just begins to flake easily with a fork.
3. Mix parsley and lemon peel; sprinkle over baked fish.