I’ve edited my original post to explain why I say this. It boils down to this: it doesn’t make financial sense to raise chickens for sale to random people. If there is one thing you can count on, it’s that farms simply can’t afford to do things that don’t make money.
But go ahead and try it. Call the 5 farms nearest you to ask if you can buy chickens or full grown hens (roosters don’t count!) and report back. If you are lucky there is some hobby farm that doesn’t care about making money… but that’s gonna be the exception.