Gordon Ramsay is a renowned chef and television personality known for his fiery temper and strict standards in the kitchen. While he has been known to be tough and outspoken, there isn't a single incident that stands out as the "worst" thing he has done in a kitchen. However, it's worth noting that Ramsay has been criticized for his aggressive and confrontational approach to cooking and mentoring on some of his television shows, such as "Hell's Kitchen" and "Kitchen Nightmares." Some people have found his behavior to be excessive or unnecessarily harsh, although others argue that it is part of his persona and entertainment value for the shows. Ultimately, opinions on his actions in the kitchen can vary greatly depending on personal perspectives and experiences.