Controversial opinion (now, apparantly): CFA spicy chicken sandwich still the goat. No sauce needed. Couple that with the waffle fries and, well, back to the drawing board Popeye's.
The Chick Fil A spicy chicken sandwich is fine, but what you have to do is get two dipping sauces on the side, Buffalo and Ranch.. you pour the Buffalo sauce onto the chicken sandwich, then dip the fries in the Ranch to cool your palate after all the heat... and you have to get a lemonade.