My orps are like that too. Whenever I change things - like separating them into breeding groups, moving them to a chicken tractor, adding or subtracting a flock member, etc - the hens stop laying for a while. If I'm lucky, it's just a few days or a week. Sometimes they decide to molt & then it can be over a month! Let's hope your hen likes the new change.Well I'll keep searching for in incubator. So far she hasn't laid an egg since moving her home. So I've probably got some time. I'm hoping to Amazon Prime one after payday this week.
Incubators are nice to have on hand because you can't always control when a hen goes broody, and an incubator can hold more eggs. Also, if something happens & the hens leaves the nest (or you have a scattered hatch or need a chick ICU), you can always pop them into an incubator. It's very strange but cold eggs sort of go dormant. On 2 different occasions, we had a hen accidentally return to the wrong nest & her eggs went cold. One of those times there was snow on the ground. In both cases, the eggs hatched but they were 1-3 days late. Of course hens can get a higher hatch rate, don't need electricity to operate, don't require constant temperature monitoring, egg turning, & humidity adjustments, and also take the place of a brooder. When I do use an incubator, I'm often lucky to have a hen go broody. I let the hen adopt all the chicks and put her inside the brooder to raise them.
This is my fav broody mama, "Cookie" She's the bantam orp I mentioned earlier. She's too small for our roo to mate, so she gladly hatches LF eggs & adopts incubator chicks. She had well over 20 chicks under her in the pic below.
Cookie says, "If it peeps, it's mine!!!"