Chicken Breast with Tomatoes and Olives

Ingredients -4 (6-ounce) skinless, boneless chicken breast halves -1 cup multicolored cherry or grape tomatoes, halved -3 tablespoons oil and vinegar dressing, divided -20 olives, halved -1/2 cup (2 ounces) crumbled feta cheese   Preparation Prepare grill to...