When you say chicks, what size do you mean? Usually chicks are 1-3 day old, which isn't a suitable meal, mostly downy feathers and feet, very little actual meat and even less calcium. A chicken large enough to be nutritionally complete is too big for a ball python to eat. Bird on occasion would be fine but if you want to feed only chickens or your ball gets stuck on them you might have problems. I've got a bunch of quail right now for my larger carnivores and tried offering some smaller ones to a boa and sstp, neither would touch them though.