Preheat oven to 400 degrees. Place the pita rounds on a baking sheet. In a small bowl, combine the oil and the garlic. On a baking sheet, brush the oil mixture on all 4 pitas using a pastry brush. Sprinkle the feta, capers, and red-pepper flakes over the pitas. Bake pitas in middle of oven, rotating sheet halfway through baking, until pitas are golden brown and the cheese is softened, 5 to 8 minutes. Remove from oven, and sprinkle with the oregano. Serve whole or cut into wedges.

Adaptation from: www.marthastewart.com