not really, to consider a chocolate is halal or not is not just merely based on the ingredients itself but also the processing of the food...we are all used to the notion of non halal is pork and alcohol in general, but it goes back way to how they process the chocolate, if the environment is dirty and such, it does not deemed as halal in away..since halal in general is pure and clean..

it's good that you consider this before purchasing the chocolate for your muslim friend, if you still wanna give ur fren chocolates, maybe you have to do a lil bit more research on the product..you still can give other than food product just to be safe..i think, the thought of giving and considering your frineds belief is more than a great gift a friend could give

Good Luck ya mate!