Like KFC? God knows how long those thighs, breasts, wings, and
drumsticks have been hanging around.
Quite often, I got stale fried chickens parts & hardened
zinger burgers from KFC too. The cheese fries is another
disappointment, often only the cheese is piping hot while the fries
are soft and stale. Sometimes, it's the cheese that is stale. If
I'm lucky once in a blue moon, I get piping hot cheese with freshly
fried fries.
Now the only 100% confirmed piping hot things from KFC is the
whipped potato (small size). And, I always order small size whipped
potatoes, once got medium & large size which have yellowish
& sour-tasting gravvy. Guess the medium & large cups are
not moving fast enough to be replaced fresh. 
For KFC, the Tampines CPF branch serves the worst food - 99%
stale & lukewarm!!