How to handle the roommate who does zero chores
Name the missed tasks and dates without attacking the person. Ask whether the system is unclear or whether they will take a different task. Set a written agreement with a deadline and check-in.
Stop absorbing every missed chore in silence. If the behavior continues, use consequences allowed by the household agreement, such as paying for a cleaner, and involve the lease-holder if the home or tenancy is affected.
Do not use lockouts or property removal. Chores are a household issue, not permission for self-help punishment.