Stir mayonnaise with Lemon Dilly Dip Mix. Spread overtop fish.
Arrange potato slices overtop (to look like scales). Cover each fillet with a piece of plastic and firmly press to make potato scales stick. Remove plastic. Season fillets with Sea Salt
Coat frying pan with oil and set over medium-high heat. Carefully add fish, potato-side down. Reduce heat to medium. Cook for 4–6 minutes, until deep golden. Gently turn fish over with a wide spatula.
Place pan in oven and bake for 6–8 minutes, until fish is cooked through.