Preheat the oven 350 degrees
Heat butter in a microwave-safe bowl, until completely melted
Combine all filling ingredients (chocolate chips, pretzels, graham crackers, coconut, pecans, caramel bits, butter, and sweetened condensed milk) in a large bowl until well blended.
Pour the filling into the pie crust.
Bake in the oven for 35 minutes or until the pie is set and the top is golden brown. Let the pie cool for 30 minutes before cutting and serving.