"Why did the Belzer Rebbe say to him es gezunterheit? It was not kosher what he was eating." (source)
"Just as your great-grandmother may have said to your grandparents to 'Ess gezunterheit,' she would want you to eat in good health, too." (source)
"In any case to those that wish to make chremslech I say 'ess gezunterheit mit a guten apetit'" (source)
Enjoy your pasta, es gezunterheyt