Sorry to be that blunt but if you have allergies to a specific common vegetable (well technically a fruit), specially common in Greek cuisine and to lactose, you should self cater. The likelihood that the meal will not fit your dietary requirements is high.

Flew to SKG from Germany yesterday and the 10:30 departure was breakfast, so again choice between frittata and crepes. I gave them the feedback this is a cutoff too late. Between late boarding and traffic, we were served at 11:10.