Your question is one you should ask to a doctor not a cook.
On this forum we can help you figure out what good food you can eat. If we gave advice on pills, you should probably not trust what we say because our knowledge of medicine is like any other layman's.
I see you graduated from culinary school. That implies (I hope) that you're curious about food and like to prepare things and eat them. I see no reason why you can't eat a nutritious diet with a late breakfast and a dinner at 7. But it may not be the healthiest way to eat. Of course, I wonder, why don't you snack during the day? Don't you get hungry? There are lots of healthy things you can eat in between: nuts, raisins, small sandwiches, hummus, a chicken leg left over from supper, carrots, piece of cheese, whole grain bread...need i go on?
Pills will not give you protein or carbohydrates or fats or roughage. And who's to say that we know all the substances that are necessary that we can put in a pill.
"Siduri said, 'Gilgamesh, where are you roaming? You will never find the eternal life that you seek...Savour your food, make each of your days a delight, ... let music and dancing fill your house, love the child who holds you by the hand and give your wife pleasure in your embrace.'"