Preheat the oven to 375°F (190°C, 180°C for a fan oven).
Place the cod fillets on a non-stick baking pan, or spray your pan with a little olive oil and put the cod fillets on top. Set aside.
In a small bowl, stir the crab meat, red pepper, scallions, breadcrumbs, chilli, parsley, celery salt and pepper together.
Use one-third of the mixture to top each of the cod fillets, lightly pressing and mounding the mixture over the top of the fish.
Sprinkle each cod fillet with 1 teaspoon of the grated cheese.
Bake for 20 minutes or until the cod is cooked through, and the topping is lightly golden.
Carefully remove from the baking sheet to dinner plates with a fish slice.
Serve with your choice of green vegetables, and potatoes if liked.