Being someone who has worked as a mashgiach part time in several JEWISH owned restaurants I have no ideas how nichnas veyotzei can be allowed. These restaurants were owned by Jews who weren’t frum by any means, but they still felt it was allowed for them to wash their own leafy vegetables using their methods and check their own eggs when the mashgiach wasn’t around. Not trying to incite panic, but the whole kashrus industry is pretty scary when it comes to restaurants.