chicken safe?

hi, sorry if this is in the wrong forum but i have these really tall weeds and then some little prickly ones on the ground (a LOT) and i was wondering if chicks are okay near these? i was observing them (4 week old gals) near the weeds earlier and i didn’t notice any issues with them pecking...

I found this plant behind my house and am not sure what kind it is, if it is edible, or practically anything about it. Can someone give me some information? I thought it was a green zebra tomato at first but it has a lot of seeds inside like a pepper plant. When I took one off and brought it...