You can pressure cook it, pressure can it, cook in a crock pot. Beast and thigh meat usually stays pretty tender even in a 4-5 month old DP, (how old are the birds, typically?) you can fillet the meat, bread and fry, use the rest, (drumsticks, backs, wings) for the crock pot or other methods. The boneless breasts and thighs can be sprinkled with tenderizer, then pounded with a tenderizing hammer, before you roll them in flour for frying. I have some older birds I cut up when I processed, and separated into frying packages, and crock-pot packages.
With the crock pot, let them cook until the meat starts coming off the bones easily. By easily, I mean almost falling off if you shake the pot even a little. If it's rubbery, it's not done! Be patient, depending on the bird, it may take as long as 12 hours or so. This is on "low", BTW. Use the meat in whatever, casseroles, enchiladas, tacos, sandwiches, shredded chicken meat for BBQ sandwiches on buns, pot pie, tamales, stir-fry, burritos, omelets, pasta dishes, chicken salad, chicken and dumplings, whatever. Leftover broth from cooking can be frozen or pressure canned for later use, in any recipe that calls for broth or stock.