Preheat oven to 350 degrees F. Brush both sides of pitas lightly with olive oil. Place on large baking sheet. Sprinkle lightly with salt and pepper. Bake in oven for 5-7 minutes or until lightly toasted and beginning to brown. Remove from oven and allow to cool.
Spread 1/4 cup hummus on one pita. Top with other toppings. Finish with a light drizzle of olive oil and a sprinkle of salt and pepper, if you wish. Repeat with remaining pitas. Serve whole.