Place the tomatoes, cucumbers, onion and bell peppers in a bowl. Mix in the olives and feta cheese. In a small bowl, whisk together the olive oil, vinegar, oregano, and salt and pepper, and pour over the salad to coat.
Use up stale pita bread by toasting it, breaking into pieces and adding to salad.
c.1997, M.S. Milliken & S. Feniger, all rights reserved