Combine graham cracker crumbs, sugar, and butter. Press into the bottom of a pie pan/plate and set aside.
Make cream cheese mixture:
Combine cream cheese and sugar in a large bowl. Mix until smooth and sugar is dissolved.
Make chocolate mixture:
In a glass bowl, place chocolate chips and ½ cup heavy cream and microwave 30 seconds at the time until melted. Whisk until smooth and combined. Let cool to room temperature.
Pour chocolate mixture into cream cheese mixture. Mix until combined.
Make whipping cream for the pie:
Whip 1 cup of heavy whipping cream until thick. Add 2 Tbsp powdered sugar and ½ tsp vanilla. Mix together
Add the whipped cream to the chocolate mousse and mix on low until combined and fluffy.
Pour into pie crust. Refrigerate for several hours or do a quick set in the freezer.
Make whipping cream for the TOP of pie:
Whip 1 cup of heavy whipping cream until thick. Add 2 Tbsp powdered sugar and ½ tsp vanilla. Mix together.
Garnish the pie with whipped topping and shaved chocolate chips on top. Slice and serve.