The CEO of a Culinary School Is Missing. Students Are Now on the Hook for Thousands Paid in Tuition. Posted by August 29, 2018 Leave a comment on The CEO of a Culinary School Is Missing. Students Are Now on the Hook for Thousands Paid in Tuition. PlantLab says its CEO, Adam Zucker — a former colleague of celebrity chef Matthew Kenney — is unreachable. They’ve canceled all upcoming classes.