For the crumb coating
Place the flour and egg in two separate shallow dishes. Mix the hazelnuts and breadcrumbs, place in a shallow dish. Toss the feta in the flour and shake off the excess. Dip the feta in the egg and then in the breadcrumbs, press firmly on the crumb coating. Heat the oil in a non-stick frying pan. Fry the feta for approx. 3 mins. on each side.
Pepper and tomato salad
Whisk the vinegar and oil in a bowl, season. Add the pepper, tomatoes, onion, olives and oregano, mix. Plate up the feta, serve the vegetables on top.