Melt the chocolate chips in the microwave in 30-second intervals, stirring until smooth.
In a bowl, mix peanut butter, powdered sugar, and vanilla extract until creamy.
Whip the heavy cream until soft peaks form, then fold it into the peanut butter mixture.
Fill each mini graham cracker crust with the peanut butter mixture, smoothing the tops.
Drizzle melted chocolate over the pies and refrigerate for at least 2 hours.
Top with whipped cream and chopped peanuts before serving.