Chakula kitamu is either sweet or delicious. If you want nice/good food, use chakula kizuri.

Because "This food" would be "Chakula hiki".
"Hiki ni (chakula)" means "This is (food)".

I found other examples here:
https://www.duolingo.com/dictionary/Swahili/hiki/2fdfb05a01457800aade6b584d6ea6c2