4 skinless, boneless chicken breast halves (1-1/2 pounds)
1 tablespoons olive oil
2 teaspoons ground cumin
1/2 teaspoon salt
1/4 teaspoon cracked black pepper
1 medium seedless cucumber, chopped (2 1/2 cups)
1 large tomato, chopped (1 cup)
1/4 cup finely chopped onion
1/2 teaspoon finely shredded lemon peel
2 tablespoons lemon juice
2 cloves garlic, minced
1/3 cup nonfat plain Greek yogurt
1 tablespoon honey
1 tablespoon milk