Make two batches of chicken...one for the aunties that can not eat spices and one for the rest of the people. Dont deprive everyone of bland chicken
If you want jerk chicken....grocery stores usually carry jerk chicken marinade. I recommend using Lawrys brand. I've nvr used it on chicken but I have used it on lamb chops and it tastes great!
For the aunties who cant eat spices...you can marinate it the way you mention above but add yogurt to the marinade as well. You should have marinated it over night....but you can still get away with doing it now.