01 - In a bowl, mix shredded chicken with mayonnaise, Dijon mustard, salt, and pepper.
02 - Place the chicken mixture on one slice of garlic bread. Top with shredded mozzarella and Parmesan cheese.
03 - Place the other slice of garlic bread on top. Grill in a skillet over medium heat until bread is golden brown and cheese is melted, about 4-5 minutes per side.
04 - Enjoy warm!
# Cook's Notes:
01 - Feel free to use store-bought or homemade garlic bread.
02 - Add some fresh herbs like parsley or basil for extra flavor.
03 - To make it spicier, you can add a dash of hot sauce or red pepper flakes.