Taste difference: The "spicy" flavor of KFC Chicken Drumstick Burger is mainly reflected in the chili pepper seasoning it adds. The main spicy ingredient in chili peppers is called capsaicin, which can stimulate the mouth and digestive tract, producing a spicy feeling. Spicy Chicken Drumstick Burgers are made spicier than Crispy Chicken Drumstick Burgers by adding chili peppers to the preparation process.

Differences in bread: The bread in Spicy Chicken Drumstick Burger is softer, while the bread in Crispy Chicken Drumstick Burger is harder.