Sprinkle half of the chopped peanuts over the bottom of the pie crust. Drizzle half of the chocolate all around the bottom of the pie plate. It doesn't have to be perfect!
In a large bowl, beat the peanut butter with the cream cheese until smooth. Add powdered sugar and beat until smooth. Add in the thawed Cool Whip and beat mixture until creamy and fluffy, scraping the sides as needed.
Pour filling into crust, evening out the top with a knife or spatula. Top with remaining peanuts and drizzle with remaining chocolate. Chill for at least an hour before serving.