This is the ideal way to worm your chickens and not have to withhold the eggs.
In regards to the wormer it contains the premium yolk diet with Flubavet added at 600g per tonne. To be fed to the birds for 7 consecutive days, for poultry meat and eggs there is 0 days withholding.
It is fine to eat the eggs while treating for worms.
I’d recommend having the birds locked up during that time and only food source is the pellets, the pellets are a complete diet for high producing animals in commercial poultry operations.