Centrarchid, most of the chickens I've had have not had hard molts. They've had more gradual molts. A few years ago I got some birds that have had much more extreme molts. Their first year as adults, they were also extremely broody, compared to my other chickens. The one that was most bare during her fall molt had started molting immediately after being broody. Her entire belly was as naked as a grocery store chicken at one point. The rest of her didn't look that good, either. At one point, she looked like a porcupine when her feathers were growing in. Fortunately, they have been less broody as they've gotten older. Their molts have also been better.
Molts seem to be effected not only by environmental conditions, but by genetics as well. I think there are other people that have particular chickens in their flocks that have hard molts, when others in the flock don't. What I mean is that you can force chickens to have hard molts, but you can also have great conditions and still have a chicken that has hard molts.