Preheat oven to 350 degrees. Place pita breads on baking sheet and heat in oven 2-3 minutes.
Place cucumber, tomato, onion, olives and lettuce in a mixing bowl.
In a small bowl or mason jar combine vinaigrette ingredients until well combined. Pour over veggies and toss to coat.
Place 2-3 tablespoons of hummus on a pita bread and spread evenly within 1/2 inch of edge. Top with about 1 cup of veggie mixture and sprinkle with feta cheese.
Cut pita into 4 triangles and serve immediately.