Remove the scales and guts from the Atka mackerel and wash it thoroughly.
Score the Atka mackerel and pat it dry.
Mix curry powder, salt, and pepper, then evenly sprinkle it over the Atka mackerel.
Pour cooking oil into a pan and heat it over medium heat.
Place the Atka mackerel in the pan and grill both sides until golden brown.
Transfer the finished grilled Atka mackerel with curry to a plate.