This is a question of prishus, not of halacha, and is not the type of subject to be discussed on a public forum. If you are on the madreiga to limit your foods to simple foods, go for it. but don’t ban others who are not on your madreiga.
What IS assur is all-you-can-eat, which, according to the Ramban, is a violation of Kedoshim tihyu.