It most certainly did. They didn't bully the chickens into becoming livestock. They didn't beat them in wrestling contests. How exactly do you think our mastery occurred, if not through intelligence? Traps and seeking out secret nests. Building cages the chickens couldn't slink out of, or that predators couldn't dig into. Slowly breeding them tame, instilling which psychological traits we preferred.
I mean, if you can't understand this any other way, go with another example, the cow. Were humans stronger than cows?
> I very much doubt ChatGPT has any ability to shove me in a pen.
It'll ask you to go, and you'll be leaping at the chance. And you won't even remember that you once scoffed at the idea that you would.
> Can you convince the chicken to do anything you wish it to,
Yes. Using only words. I hire someone (using only words) to be my chicken wrangler. He uses basic principles of psychology. We could have it become the guidance system of a cruise missile, for instance. Someone already figured out that trick a few decades ago.
It's pretty trivial to work up the plan to convince the chicken to do anything that is within the capabilities of a chicken. With me using only words.