Place 5 cups cornflakes in a large ziploc bag and seal. Roll the rolling pin over the ziplock bag with cornflakes all over the edge so that everything crushed to even small crumbs.
Transfer the cornflake crumbs onto a plate. Add chopped ⅓ cup fresh parsley, 1 tablespoon dried oregano and combine well. Set aside.
In a bowl or plate, season 1 cup plain flour with 1 teaspoon salt and ½ teaspoon freshly ground black pepper and mix. Set aside.
Take a piece of marinated fish and coat it with the seasoned flour, shaking off any excess.
Dip the floured fish into the beaten eggs, ensuring it is coated well, wipe the excess egg on the side of the bowl to avoid dripping.
Then roll the fish in the herbed cornflakes mixture to coat well. Coat the entire batch in the same manner. For a thicker coating, repeat the process - dip again in the egg and coat it with the cornflakes mixture.
Place the coated fish pieces onto a plate and freeze for 30 minutes.
Heat enough oil in a deep pan or a pot. Deep fry the fish nuggets on a medium heat until golden brown and crisp.
Remove the fried nuggets with a slotted spoon and drain on the kitchen towel.
Serve immediately with your favorite dip or sauce .