Hens do not seem to be able to tell which babies hatched from eggs they laid.
To a hen, "her" babies are the ones that hatched under her, or ones that were put under her as tiny chicks so she thinks she hatched them.
If the eggs hatched at a different place and time, then she does not think...
You CAN try anything.
Several people have given reasons that they think you should not try.
If you do try anyway--watch, and be ready to take the chicks back out if there is a problem.
Hens will typically try to protect their own babies from those "dangerous" big chicks.
If the hen chases away...