"The food is too much delicious"
Translation:Chakula kitamu mno
If you use those three words, the order has to be "much too delicious", because "too much delicious" is not idiomatic English. It is not inconceivable that someone might say "The food is much too delicious" or "The food is entirely too delicious," but it sounds exaggerated to me, or that the speaker is implying (in a joking sort of way) that the food is so good it is causing him to eat too much. I agree with "The food is very delicious" as a reasonable translation of the Swahili sentence, which seems OK to me, though maybe not exactly the way I would say it.
Although - tamu can sometimes be translated as sweet I would say those cases are rare. From my knowledge of Swahili and English I would say that "the food is too sweet" would have the opposite meaning from what is being said in Swahili. ie translating the English that way would mean the food tastes bad whereas the Swahili meaning is that the food is good.