Shake Shack Subtly Shades Chick-fil-A with CHICKENSUNDAY, 'God's Chicken' Fights Fire with Freebie

Shake Shack Subtly Shades Chick-fil-A with CHICKENSUNDAY, 'God's Chicken' Fights Fire with Freebie There's a new chapter unfolding in the chicken wars, but the good news is it could mean free chicken for fans of Shake Shack and Chick-fil-A.