Mediterranean Salad with Chicken

Combine 2 cups romaine lettuce, 3 ounces shredded cooked skinless chicken breast (about 2/3 cup), ½ cup chopped tomato, ¼ cup sliced cucumber, ¼ cup thinly sliced red onion, 6 large pitted Kalamata olives, and 2 tablespoons each crumbled feta cheese and low-fat balsamic vinaigrette dressing; toss gently.