Pre-heat oven to 200°C / 400°F / Gas Mark 6.
Wash the potatoes and cut into wedges. Brush with oil and sprinkle on salt. Place in oven and bake until browned around the edges and soft in the middle for approx 10 minutes depending on how dainty your wedges are.
On a chopping board, cut fish into long pieces.
Place the beaten egg in one bowl and the herbed crumbs in another. Dip each piece of fish first into the egg, then the crumbs and transfer to a baking sheet lined with greaseproof paper.
Add fish to oven and bake for approx 6mins until the fish is cooked and flakes easily with a fork.