My mother is in hospice care at home. Dad can not cook and they are mostly living on fast food. Any suggestions for meal delivery?

I'm with Sunny, considering the overwhelming options of heat and serve foods available in the average supermarket I question how a man who can't put a meal together can provide the level of care your mother needs.
Maybe planning and initiation are part of the problem, especially in a man unused/unwilling to making those kinds of domestic decisions. Perhaps stocking the fridge, freezer and pantry and then providing a daily menu plan based on available items would help.

I have been searching for healthy home delivery meals. Heart to Home Meals just delivered fresh frozen meals today, great service and a welcome package. Prices are responsible. The meals look good, but saving them for when we have lots of appointments coming up, and I don't feel like cooking. I would goodle meal dilivery service, and see if they will deliver in your area, or you could pick them up at the facility. I know some places have that service. Post me for an update in the future if you would like. I am still searching for more services.

Is there a Fresh Direct, Wegman's, Shop and Stop or any other large chain grocery near them? Most of them have prepared foods that are heat and serve.

PeaPod could deliver a week's worth of frozen entrees, sort of like the old TV dinners. Pot pies, a tray of lasagna that could last a week.

How about canned soups?

Meal Train?

My mom loved Schwan's. The food was good, easy to prepare, and reasonably priced.

Is your dad able to put frozen foods into oven or micowave and serve? If so, you or volunteers could prepare casseroles, dishes with instructions on how to heat up and he has one set aside for dinner each night. Easy foods for breakfast and lunch. If your dad is not able to do this, I'd consider if the home setting is right for them.