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!