"The food is enough!"

Translation: Chakula kinatosha!

[NannaDMI]

Could one also say "chakula ni kutosha"?

[machieng]

that isn't quite grammatically sound, it would translate to 'the food is to be enough', since 'kutosha' is the stem word of 'be enough/suffice/fit'. You could say 'chakula ni cha kutosha', because '-a kutosha' also means 'enough/sufficient'