I think it depends on the treatment. What are you using? Amprolium has no wait time for meat residue, I could not find the right page that indicates a waiting period for eggs. Sorry I can't be of more help right now!
I called the company and they said to toss the eggs during treatment (and 14 days after the last dose) but she said I would need to speak to a vet if I wanted to hatch the eggs that were laid during treatment.
unfortunately we don't have poultry vet's in our area.