I have a good friend who is Hispanic and , on occasion, I make reference to her ethnicity usually in a positive way, like about her skin and her cooking. There is no way we can determine if your friend takes offense but, to be on the safe side, I would knock off the jokes. It could be she has already taken offense but is hiding it. So I don’t see the point in continuing it. Sometimes, not often, this sort of thing ruins a relationship. Lots of other things to remark about , right? The very fact that you asked shows you’re aware of what could materialize. Whether it’s worth stopping is up to you, of course.