How long has it been since she laid eggs?
Have you seen her drinking water?
After laying eggs, there are a variety of things that could go wrong with the female.
She will be very depleted of nutrients due to those nutrients being used to form the eggs. One common problem is calcium deficiency. I had a female cham who developed an acute calcium deficiency after laying an infertile clutch of eggs. That led to her tongue not working properly (it went limp when she shot it out). That made it very difficult for her to eat.
It took two weeks of liquid calcium supplementation to sort that problem out.
Also, if there are eggs left inside of her that never got laid, that may well be the reason for her not resuming eating. If these eggs don't get expelled properly, that could lead to egg-binding in the female and possibly even death. It's very difficult to determine whether there are any eggs left inside a female (even on x-rays, the soft egg shell is often undetectable), so sometimes as a precaution a vet may prescribe oxytocin after a female has laid eggs to induce her to lay any leftover eggs.
If she doesn't resume eating fairly shortly, you probably would need to seek the help of a vet.