I don't think it's your fault. Like I said, that's pretty much just what baby chicks do... the only quiet chicks I've known have been lethargic ones that wound up not making it. Constant happy peeping is just normal chick behavior and it shouldn't translate into constant clucking as adults or...
All chicks will peep pretty much the entire time they're awake. Quiet in breed reviews refers to their adult behavior. They don't make noise nonstop as adults, but they will make chicken sounds regardless of the breed.
Chicks peep loudest when unhappy, which usually means they're too hot or...