Greek-Style Chicken Tostadas with Yogurt Sauce | Easy Home Meals

Ingredients

• 6 (8-inch) refrigerated whole wheat flour tortillas or 6 whole wheat pitas
• 5 Tbsp. olive oil, divided
• ½ cup red wine vinegar, divided
• 1 tsp. granulated sugar
• Salt and freshly ground black pepper
• 1 medium red onion thinly sliced
• 1 large cucumber
• 1 cup plain Greek-style yogurt
• 1 Tbsp. finely chopped fresh mint or dill
• 4 oz. cherry or grape tomatoes, sliced in half (about 1 cup)
• 3 oz. crumbled feta cheese
• 3 cups shredded cooked chicken (about 1 1/2 pounds chicken) or already pre-cooked, packaged chicken