Make the Crust:Preheat oven to 350°F (175°C). Spray a 9-inch pie dish with nonstick spray.In a medium bowl, combine vanilla wafer crumbs, brown sugar, and melted butter. Mix until evenly coated.Press the mixture firmly into the bottom and sides of the pie dish using a flat-bottomed glass.Bake for 10 minutes, then remove and let cool completely on a wire rack.
Prepare the Filling:In a large bowl, beat the mascarpone and confectioner’s sugar with an electric mixer until smooth, about 2–3 minutes.Add vanilla extract, cinnamon, lemon zest, and ricotta cheese. Mix until just combined.In a separate bowl, whip the heavy cream until stiff peaks form (2–3 minutes).Fold one-third of the whipped cream into the cheese mixture to lighten it, then gently fold in the rest.Stir in ⅔ cup of mini chocolate chips.
Assemble and Chill:Spoon the filling into the cooled crust and spread evenly.Sprinkle the remaining chocolate chips on top.Cover with plastic wrap and refrigerate for at least 4 hours, or overnight for best results