I'm probably just missing something obvious but is there any way to view more than just the last comment made on your comic? Because a couple times now I've had someone post a comment but it wasn't on the latest page and I missed seeing it because my control panel only lists the latest comment.

No, there isn't any. It is already in the Big List Of Suggestions as "- View all new comments on a single page, with link to relevant comic page". Sorry :(
I use to browse all my archive now and then, but that's tiresome.