Keep an eye on it – but don’t change anything yet. Google clearly likes the content the way it is – so changing it could change that.
If you lose it see who took it and see how their content is different.
Keep in mind that snippets can be *very* moody. I have blogs that will have the snippet consistently and then drop and then get it back and drop. I would say wait until you are continuously losing out to someone else before making major changes.