x2 make sure you are not feeding chicks laying feed. This will kill them. Dough and seeds are also not good options. You need to have chick starter or grower. If it is not available locally order it online right away. Feed scrambled eggs and shredded carrots until it arrives.Also not sure what crumbles you feed your grown chickens that you are feeding tiny chicks but if its layer feed as i use it can kill a chick as it has too much calcium for them until they are laying and will wreck their kidneys .Another reason i use chick starter crumbles a small bag is $3.99.
You said the piece of seed jumps away from him when he trys to eat..was thinking he is trying it seems but its to hard for his tiny beak.Maybe if you sort of smashed it with something he could eat it.Just a thought.