Whisk vinegar, oil, dill (or oregano), garlic powder, salt and pepper in a large bowl. Add lettuce, chicken, tomatoes, cucumber, onion, olives and feta; toss to coat.
Tip: If you don’t have cooked chicken, poach 1 pound chicken breasts for this recipe. Place boneless, skinless chicken breasts in a medium skillet or saucepan. Add lightly salted water (or chicken broth) to cover and bring to a boil. Cover, reduce heat to low and simmer gently until the chicken is cooked through and no longer pink in the middle, 10 to 15 minutes.
Per serving: 343 calories; 18 g fat (5 g sat, 7 g mono); 89 mg cholesterol; 11 g carbohydrates; 31 g protein; 3 g fiber; 618 mg sodium; 656 mg potassium.
Nutrition Bonus: Vitamin A (140% daily value), Vitamin C (45% dv), Folate (31% dv), Potassium (19% dv), Calcium (15% dv).