Preparation Whisk 1 teaspoon oil, mint, cumin, and pinch of freshly ground black pepper in medium bowl to blend. Add cheese slices; toss to coat. Marinate at room temperature at least 30 minutes and up to 2 hours. DO AHEAD: Can be made 2 days ahead. Cover; chill. Prepare barbecue (medium-high heat). Grill pitas until warm and grill marks appear, about 1 minute per side; transfer to serving plate. Grill cheese until grill marks appear and cheese begins to melt, about 1 minute per side. Stack each warm pita with slice of tomato and cheese. Drizzle with oil and sprinkle tomatoes lightly with sea salt. Available at some supermarkets and at specialty foods stores, natural foods stores, and Greek markets.
Preparation Whisk 1 teaspoon oil, mint, cumin, and pinch of freshly ground black pepper in medium bowl to blend. Add cheese slices; toss to coat. Marinate at room temperature at least 30 minutes and up to 2 hours. DO AHEAD: Can be made 2 days ahead. Cover; chill. Prepare barbecue (medium-high heat). Grill pitas until warm and grill marks appear, about 1 minute per side; transfer to serving plate. Grill cheese until grill marks appear and cheese begins to melt, about 1 minute per side. Stack each warm pita with slice of tomato and cheese. Drizzle with oil and sprinkle tomatoes lightly with sea salt. Available at some supermarkets and at specialty foods stores, natural foods stores, and Greek markets.