There are a number of things that could contribute to your hens not laying right now and it could be a combination of...I bought 4 Brahma hens in late September. The breeder said they were 2 years old. I didn't expect them to be great layers, but I love the breed. October 6th was the last egg I received, and nothing since. Granted they were molting pretty hard. But here we are a month later, and their faces are pale as can be, and no signs of impending eggs. Brahmas are known for laying during winter and it's not even cold here in N. California.
Do your Brahmas stop laying? For how long? I hatched some eggs from them, so I have up and coming stock. How many weeks would you give them before making chicken stew?
Stress from being moved. It takes them a while to settle in a new coop.
Molting. This alone can be hard on some birds.
Brooding stress. If they are two years old they may be depleted from brooding chicks this summer.
Dietary deficiency. If they were not fed well all summer they may be weak from a poor diet...this can show in pale faces/combs.
Illness. Many illnesses will make them stop laying.
This is still Fall...my birds are not laying well right now either. I'd feed them up with a minimum 18% feed, make sure they have oyster shell available, add a vitamin/electrolyte supplement to their water and give them high protein treats...bugs, grubs or meat. Let them rest for a few more weeks and then decide if you want to get rid of them.
Good luck!