The chain on my hire bike got caught in between the discs and has bent one of them

Hi,

I hired a bike that I need to return tomorrow, and I’m a bit worried I may have damaged it. I was trying to change gear when it suddenly locked up. When I checked, the chain had got stuck between two of the chainrings.

I managed to pull the chain out, but now when I try to change gear the chain doesn’t sit properly on all the teeth, and it looks like one of the chainrings has bent slightly out of alignment.

Does anyone know how serious this might be, and whether it’s something I could fix myself before returning the bike?

Thanks.