Popeyes’ $4 Chicken Sandwich arrives amid rival fast-food promotions. Taco Bell recently introduced its Caliente Cantina Chicken lineup, featuring spicy tacos and burritos with red jalapeño sauce.

Louisiana hot sauce is appealing to a broader range of spice-level tolerances. It's a great option for adding a kick to the brand's red beans and rice or any of the Popeyes chicken items ...