What would you do with a fussy husband?

My husband is becoming impossible to please. We already don't eat dairy and meat (because of him mostly) and for the last 6 years he eats what i put before him but for the past few weeks he has become impossible to please. He seems to think that everything makes him sick from sinus to headaches and demands that i no longer give him foods like lentils, prefers gluten free, no refined sugar, no prepacked convenience foods like fake meats, we already dont eat most nuts due to an anaphylactic child and the list goes on. I have 4 kids and i have no idea what to make and none of us find his diet he wants on the table realistic or palatable. It is so inconvenient and he is so angry at the moment because we had take out and i got him a lentil burger which he reckons makes him sick so is refusing to eat it and has been yelling at me. He never cooks and i dont have the time to cook 2 different meals each night. I told him he can cook his own and he is in a rage, and says if he has to get his own food he wont give me electricity money etc. what can i do?