Oh wow it's so get an actual professor's take on this, thank you! Thank you for the encouragement, I was actually planning on not going through with this out of fear of coming across as creepy, but now I will. So if a student who took one class with you, and had no specific reason to visit, but emailed you asking to stop by your office hours that wouldn't weird you out at all? Maybe I am just overthinking this. Do you have any suggestions on how I should word this email so as to sound casual and respectful, rather than invasive?

Thank you!