It is fine to freeze (even if containing originally frozen chicken) but recommended that you don't keep for too long because of garlic and spices. Say 1 month max.
Fresh chicken that has been frozen - and then cooked - may be frozen again. Cooked chicken that has been frozen may be safely eaten,but cannot be defrosted,heated - and frozen again. The more a food item is reheated,the more chance there is for bacteria to develop.
Make sure the food is thoroughly defrosted,and heated until bubbling.