Preheat oven to 325°F.
With scissors, cut pitas in half horizontally, making 2 rounds.
Cut each round in half and then into thirds or quarters, making 6 to 8 triangles per round.
Place close together on baking sheets and spray the tops with cooking spray.
Bake for 10 to 15 minutes, or until lightly browned and crisp, rotating baking sheets halfway through the baking time.
(Chips may be stored in an airtight container for several days or frozen.)