Offset closet flange for toilet

I'm getting ready to replace our existing shower with a new one but it is a few more inches deep/wide than the old one which is going to put it really close to the toilet.

Can I replace the existing straight flange with an offset closet flange so I 'move' the toilet to the right? If so, what is the specific type of offset closet flange I need in order to do that? I don't get an oval one, correct?

Thank you.