Crust
Preheat oven to 300F and line a work surface with a silicone mat or a large piece of parchment paper. In a large bowl, whisk together the almond flour, cocoa powder, sweetener, baking powder, and salt. Stir in the egg, melted butter, and vanilla extract until the dough comes together. Turn the dough out onto the prepared work surface and pat into a circle. Top with another piece of parchment and roll out into a circle about 11 or 12 inches in diameter. Press and crimp the edges to form a nice even circle. Slide the silicone mat or parchment paper onto a baking sheet and bake about 30 minutes, until firm to the touch. Remove from oven and let cool.

Frosting
In a medium bowl, beat together the cream cheese, butter, and peanut butter until smooth. Beat in the sweetener and vanilla extract. Add 1 tbsp cream and beat until smooth. Add additional cream a few teaspoons at a time until a spreadable consistency is achieved (this will depend somewhat on how thick your peanut butter is). Spread the frosting over the cooled crust, leaving a 1/2 inch border around the outside.

Toppings
Sprinkle the pizza with the chopped peanut butter cups and peanuts. In a small microwave-safe bowl, heat the cream until bubbling. Add the chocolate chips and let sit for a few minutes to melt, then whisk until smooth. Drizzle over the cookie pizza and let set 20 minutes before cutting.