chicken-n-dumplings, chicken noodle soup, chicken broth, this is what happens to my laying hens when they reach about 30 months old.
I do have pet chickens and couple are 8 years old, they lay occasionally but not often.
On the older hens the leg and thigh meat can be tough even after boiling for a few hours. After I cook the whole chicken and good all that good broth I pull the chicken out, let it cool and pull off off the breast meat, wing meat and the white meat on the back and use that in whatever I'm making. The leg and thigh meat is a treat for my two dogs.