I personally think it's a learning experience.Sure they can.
They can also chase and scream at them.
I'm not against any young children looking after chickens, if they are responsible.
Sadly some aren't.
For my kids, they've never had this experience before so they have this image that they're going to be all cuddles like a puppy. Despite how much I've explained. I am trying to be understanding because I was also picturing my kids holding them, feeding them, sitting in peace with them and that wasn't how it went. No one followed the script, apparently.