In a mixing bowl, cream together softened cream cheese, peanut butter, powdered sugar, and Nutella. Once well combined, add in 8 oz. Cool Whip, slowly combining until mixture is smooth.
Stir in semi-sweet chocolate chips.
Divide mixture evenly between 2 pie crusts.
Frost each pie with the remaining 8 ounces of Cool Whip.
Decorate the top of each pie with chocolate flavored syrup. You can create a pretty pattern by swirling the chocolate syrup in a circular fashion from the center of the pie and working outward. Then, using a pointed kitchen knife or toothpick, lightly pull the syrup from the center out, to create stripes.
Optionally, decorate with a few additional semi-sweet chocolate chips.
Keep pies chilled in the refrigerator until ready to serve.