Preheat oven to 450 degrees F. Thaw fish, if frozen. Rinse fish; pat dry with paper towels. Cover baking sheet with parchment paper. Place fish fillets in prepared baking pan.
In a small bowl, combine crushed corn flakes, Parmesan cheese, melted butter, and lemon pepper. Sprinkle crumb mixture on top of fish; use fingers to lightly press crumbs into fish. Some crumbs may fall off fish into pan.
Bake for 6 to 8 minutes or until fish flakes easily when tested with a fork and crumbs are browned. Serve the fish and any crumbs from the baking pan with lemon wedges.