Well, being the fact that KFC is mainly fat/carbs in earch meal unless you get the "low carb" chicken, ALA can be used, I just don't know how useful it will be. I see it the same as dropping an ALA in a BK Whopper meal
Even a large dose of ALA would not fix the problem of an overload of hydrogenated fats and such. It's just not too healthy; although feasible in some cases, I wouldn't think it would be a regular for most people.