Chicken Pita with Tzatziki Sauce

INGREDIENTS

• 1/3 cup Hellmann's® or Best Foods® Light Mayonnaise
• 1 Tbsp. lemon juice
• 1 clove garlic, finely chopped
• 1 medium cucumber, halved and seeded
• 2 cups cut-up cooked chicken
• 1 large tomato, sliced
• 1/4 cup sliced red onion
• 6 (8-in.) whole wheat pita breads