Sorry to be share the bad news with ya but according to the Center for Disease Control aka CDC, it's not in your best interest to dress up your pet chicken this Halloween even if it makes them look adorable.
According to People Magazine, the CDC says that dressing up your chicken can lead to Salmonella germs.
"Humans can pick up from handling chickens or from handling their “cages, coops, feed and water dishes, hay, plants, and soil in the area where the birds live and roam,” the CDC has a list of tips. They include not snuggling or kissing your chickens, washing your hands after coming in contact with your chickens and their surroundings and not eating or drinking near your chicken coop."
Yes so that is gonna be a hard PASS! Besides, how would you even attempt to dress up a chicken? I feel like they would run away or squirm their way out or poo on my feet! Haha!