Preheat oven to 425° .
In a large bowl, combine oil - pepper. Cut potatoes lengthwise into 1/2" strips.Add oil mixture , toss to coat. Place on 15"x10"x1" baking pan.Bake 15 minutes before you put in your fish.Spray your pan first. Bake 25-30 minutes until golden brown.
Meanwhile, combine flour - pepper in a shallow dish. In a second dish. Beat eggs and water. In a third dish combine cornflakes, cheese and cayenne. Dredge fish in flour, then dip in egg mixture - roll in crumb mixture.
Place on a baking sheet that has been coated with spray. ( I used non-stick foil) .
Bake 10-15 minutes or until fish starts to flake.