On a shallow dish combine the flour, salt and pepper. On a second dish, beat the eggs with 1 tablespoon of water. On a third dish, combine the bread crumbs, panko, and marjoram and parmesan cheese.
Coat the prawns on both sides with the flour mixture, shaking off any excess, then dip both sides into the egg mixture and dredge both sides in the bread crumbs mixture.
Heat the oil in a large sauté pan, ½ inch up to skillet side, and cook breaded prawns on medium high for 2 to 3 minutes on each side, until golden brown on each side. Do not overcrowd the skillet.