Greek Pita Pizza Recipe

Name: Greek Pita Pizza Recipe
Ingredients: 1 (15-ounce) can chickpeas, rinsed and drained; ¼ cup tahini; ¼ cup water; 1 lemon, juiced; 1 garlic clove; 1 ½ + ⅛ teaspoons salt, divided; ½ teaspoon cumin; 1 English cucumber, diced; 1 cup grape tomatoes, halved; ¼ cup red onion, diced; ¼ cup Kalamata olives, chopped; 1 tablespoon + 2 teaspoons olive oil, divided; 1 tablespoon apple cider vinegar; 1 teaspoon + ⅛ teaspoon oregano, divided; ¼ teaspoon + ⅛ garlic powder, divided; 6 Greek pita breads