Chick-fil-A's breaded chicken is healthy ?

No fast food is healthy for you unless it's a raw salad without dressing. The oil in the fryers is the worst thing you can put in your body. Mostly seed oils and other fillers (like stuff you find in cement) for cost-effectiveness.

who said its healthy?

There's no such thing as food that's inherently "healthy" or "unhealthy." Any food can be healthy or unhealthy; it all depends on how much of it you eat and how often you eat it. Even pure water is unhealthy to the point of being deadly if you drink too much of it - https://en.wikipedia.org/wiki/Water_intoxication

Alle Dinge sind Gift, und nichts ist ohne Gift; allein die Dosis macht, dass ein Ding kein Gift ist.
All things are poison, and nothing is without poison; the dosage alone makes it so a thing is not a poison.

—Paracelsus, 1538

I don't think many people are saying fried breaded chicken is healthy. At least I haven't heard it.