Either a bit of the chick starter mixed in, or you could feed the odd hard-boiled egg. Don't over do eggs though, because they are high in fat as well.
But I think like rosemarythyme said, they should be fine, so I wouldn't worry to much, just bare it in mind.
My only thought is the all flock is slightly low in protein for growing chicks, although after 10 weeks their growth does slow down a bit.
Calcium looks fine.