Measure all marinade ingredients into large jar; shake well to blend. Place chicken in shallow glass dish; pour Herb Marinade over chicken. Cover dish with plastic wrap; refrigerate several hours,turning meat occasionally. Remove chicken from marinade. Place chicken halves, bone side down, on grill 5 inches from medium coals; cook 20 to 30 minutes. Turn chicken and cook 30 to 40 minutes longer; basting frequently with marinade, until chicken is done. Makes 6 servings.
Either refrain from basting the chicken for the last several minutes of cooking or halfway through cooking, boil remaining marinade (let boil for 5 minutes to kill off the bacteria. Do not brush finished meat with contaminated sauce.