The full answer
Under HMS standards, machine-slaughtered chicken is not Zabiha Halal and should not be consumed as Halal meat.
HMS has dedicated two complete Know Your Halal webinars to explaining why machine slaughter does not fulfill the requirements of proper Zabiha.
HMS certifies hand-slaughtered poultry instead.
Answers in the Halal Knowledge Center reflect the standards followed by Halal Monitoring Services (HMS). HMS certifies only what it checks.