Wash salads, drain and pluck into bite-sized pieces. Wash and halve the tomatoes. Drain artichokes, cut into quarters or slices.
Mix vinegar, mustard, salt, pepper and some sugar. Stir in 2-3 tablespoons of oil.
Cut the feta into 6-8 thin slices. Whisk the egg. Turn cheese slices first in flour, then in egg and finally in breadcrumbs.
Heat 1-2 tablespoons of oil in a large coated frying pan. Fry the feta for 2-3 minutes on each side until golden brown. Remove and drain well on kitchen paper.
Mix the prepared salad ingredients, olives and marinade and divide into 4 plates. Arrange the feta on top.