Marinate the chicken. In a large zip top bag or other container, combine all ingredients for the marinade. Submerge the chicken breasts in the marinade and refrigerate for at least 12 hours or up to 18 hours for more flavor.
4 boneless, skinless chicken breasts, ¾ cup brown sugar, ½ cup olive oil, ½ cup apple cider vinegar, ⅓ cup soy sauce, 4 cloves garlic, 2 Tablespoons Tabasco Sauce, 2 Tablespoons honey, 2 teaspoons salt, 1 teaspoon black pepper, ½ teaspoon red pepper flakes