Well, you can. But to get the same amount of nutrients in one pill, you’d have to eat 2.2 pounds of these ingredients PER MEAL! Not only would it take you ages to finish, it’d be really expensive.
To source these ingredients, you’d have to go to a million supermarkets. Then head home to store them properly, look for recipes online and then cook them. Do you really have the budget, energy, and time to buy, prep, cook, then eat all these?