As the activity piles up over the past 1+ years I'm starting to view it as a potential resume building thing and wishing I had used my real name.
Any issues (and is it possible) to switch it?
Yes it would be OK. You account is tied to your id not your name.
When any question/answer of yours is viewed the name will update.
You just have to change your user name in your profile and you're done.
It might be confusing if you change your user name all the time, but even trusted users don't care.