I have weird eating habits too, like if I have a sandwich, maybe ham and tomato, I don't have butter, marg or any kind of dressing or spread at all, and I will put the bread/softie on the plate, then the ham and tomato, all eaten separately, so not really a sandwich at all, but I do make my own food, and don't expect anyone else to faff about with it, just me and two DDs here anyway, and they don't care what I do with my food.
I don't like certain foods touching another on my plate either, and while eating, I eat everything separately, i.e. a forkful of tattie, then one of veg, then the meat, I never put them on the fork together.
I hate mushy peas, they're not really a thing here (NE Scotland) and the thought of putting them in a pie is making me feel sick!
You should just get on with eating your own meal, and let your DH faff about as much as he likes with his.
I know I'm weird and fussy with food, but I'm the one who makes it and eats it, so your DH should not expect you to be cutting his pie lid off.