Food pellets

I've frequently been disappointed by the lack of progress we've made towards a Tomorrowland-type reality - the lack of everyday jet packs is a particular pet peeve of mine but even more critical is the lack of a food pellet, or a meal pill, that could simply be taken as a substitute for meals. I enjoy food to a certain extent, but I would definitely prefer to not have to make the effort to think about what to eat, preparing, shopping for food, determining appropriate portions etc. Think of the time that could be saved if instead of sitting down for meals we popped a few pills with a glass of water and went on our merry ways? Also, this way we could assure that we would be getting all the appropriate nutrients - it could end world hunger as we know it. So again, I ask the scientific community, why haven't we figured out the mechanism for the meal pill? It seemed like Wonka was getting pretty close with his meal gum (see the demise of Violet Beauregarde in the original charlie and the chocolate factory).