Broken ribs??

[Bogertophis]

I'll be sure to post updates.

I think I'm going to wait a bit and monitor any strange behavior, physical changes, etc.

Thank you all for your help.

I think that's fine. It's really important to keep a snake eating, especially if they're underfed already. That might be what's causing this- it's very hard to assess a snake's weight & muscle tone from photos, because they often "inflate" with a deep breath & look fine until they exhale. But if anything changes, that can change the best option.