Preheat oven to 400 degrees F. Spray a mini muffin pan with cooking spray or grease with butter.
Prepare cornbread batter according to package instructions.
Use a medium cookie scoop or a tablespoon to fill muffin tin cups about 2/3 full with cornbread batter.
Use a small cookie scoop or a teaspoon to drop chicken filling in the center of each scoop of cornbread.
Sprinkle shredded cheese on top of each muffin. Bake in preheated oven for 10-12 minutes, or until cheese is melted and cornbread is golden brown. Allow to cool slightly before removing from pan and serving.