Greek Chicken Nachos

Ingredients (13)

• 4 (6-in.) whole wheat pitas
• 2 tbsp extra-virgin olive oil
• 2 tbsp red wine vinegar
• 1/4 tsp salt
• 1/4 tsp black pepper
• 1/4 tsp ground oregano
• 1 cup grape tomatoes
• 1 cup diced English cucumber
• 10 pitted kalamata olives
• 2 skinless
• 1 cup mozzarella cheese
• 1/2 cup feta cheese
• 2 tbsp fresh oregano