Yes. And do. And so do millions of people. The market is there, but the mechanism is not -- because to trust that the animals are not abused, you must know about the farm, which breaks traditional supply chains where a chicken is a chicken.
I've often wondered if a single-source brand could arise where they simply print a QR code on the package that would let you track the meat from its source and review living conditions (video, photos, etc). Its just a matter of historical record, so its feasible if you're willing to install the technology in the farm. There are independent auditors to assess farm quality for organic, etc -- why not also employ them for cruelty practices.