Yes it’s easy to model, just lazy. Is there a script floating around somewhere to easily create chains?
lo i think it would take longer to download and run a script than it would to model the chain. using pathdeform to fit it to a spline is a good trick too.
railclone lite maybe?
not sure if it´s exactly what you are looking for, but worth a try.
Itoo soft clone can do it - straight ones anyway.