1. Preheat oven to 400°.
2. Place pita halves on an ungreased baking sheet; bake at 400° for 5 minutes or until lightly toasted. Spread 1/4 cup hummus on each pita half; top each with 2 tablespoons feta cheese.
3. Bake at 400° for 6 to 7 minutes or until thoroughly heated. Top each pizza evenly with tomato and remaining 3 ingredients. Serve immediately.