It won't harm the chicken but it will mean that she will have less eggs to lay in her life so, eventually, she'll run dry. However, there isn't much you can do about it, it is a thing she and her body will have to sort out.
Given that you have over 3,000 posts on this site, I would assume you're not new with chickens. On the other hand, your comment above makes me wonder. Chickens do not "run dry". Chickens come into the world with all the ova they will ever possess, which numbers in the hundreds of thousands. A hen's supply of ova will never run out over the course of her lifetime, even if she laid 100 eggs a day. What DOES happen is simply that the reproductive system tires out and quits working with age; it has nothing to do with her running out of ova/eggs.