4 (8 ounce) containers strawberry yogurt
1/2 cup balsamic vinegar
1 tablespoon white sugar
1 tablespoon ground black pepper
1 teaspoon ground cinnamon
1 teaspoon kosher salt
4 skinless, boneless chicken breast halves
2 tablespoons olive oil
1 teaspoon lemon juice
4 large strawberries
2 teaspoons minced fresh parsley
1 teaspoon minced fresh mint leaves
1 tablespoon balsamic vinegar (optional)