Preheat your oven to 350°F (175°C).

In a medium-sized mixing bowl, combine your shredded chicken with basil pesto and mozzarella cheese, folding until well combined.

Carefully slice the slider rolls in half horizontally and place the bottom halves on a prepared baking sheet.

Spoon the chicken mixture onto the bottom halves of each slider roll, packing it in lightly.

Melt garlic butter and brush it generously over the tops of the slider rolls.

Place the tops of the slider rolls over the filling and cover the baking sheet with aluminum foil. Bake for 15-20 minutes.

Allow to cool for a few minutes before slicing and serving.