Preheat oven 170degree, debone grilled fish and flake it and set it aside

In a small bowl, break eggs, add flaked fish, salt, pepper and onions and whisk once you are done set aside

Spray olive oil on baking dish and pour half of the whisked egg into the baking dish and layer washed lettuce on top and pour the remaning eggs

Place baking dish into the oven for about 15 to 18mins and once its set and baked through turn off the oven and allow it cool off a bit before serving.