Cut the flatbread in half. Mix together the chopped vegetable, cilantro and garlic. Mix together olive oil and vinegars; add to vegetable mixture. Stir in feta cheese. Fill Kontos Pan Plano Flatbread with your vegetable and feta filling; using a slotted spoon to avoid bringing along too much dressing. Wrap tightly in foil for transport. Note: The vegetable mixture can be made a day in advance to intensify flavors. You can double or triple the recipe to make more sandwiches.