Why is my Chicken popping this stuff?

[Chicks and Hens]

Why is my chicken pooping large dark green poop should I be worried? they eat tomatoes from my garden but it looks like only one chicken is pooping it

 

[Den in Penn]

I wouldn't worry if it is still acting normal. With free ranging chickens who knows what they eat, If it is green, it probably was some plant it liked. If you really want to have a what the heck moment give them some beets.

 

[Chicks and Hens]

Hahaha I will have a shot a that!