The line cooks are not doing their job sufficiently and not working as a team
Hold everyone equally accountable. Stop allowing personal relations to employees affect their decisions when it comes to consequences.
I have been with the company for almost 5 years and I get paid $11.50 but new hires in the kitchen are getting paid $12.00 minimum. I do more work than most of the kitchen staff and I am not rewarded for my hard work by a gender pay gap.