Preheat the oven to 425℉ and lightly grease a 9" pie dish. On a lightly floured surface, roll the pie dough out into a 12-inch round. Carefully transfer the dough into the pie dish and trim around the edges, leaving a ½-inch overhang. Tuck this overhang under itself and then use your fingers to crimp the edges.
Poke a few holes at the bottom of the crust with a fork, and then freeze the pie crust for 15 minutes.
The next step is to blind bake the crust. After removing the crust from the freezer, line the shell with either aluminum foil or parchment paper, completely covering the bottom and sides. Fill with either pie weights, dry beans, or uncooked rice. Bake the crust for 12-14 minutes, until the edges just start to set. Then, remove the weights and foil/parchment paper, and then continue baking the crust for another 4 minutes. It may puff up a little, but will settle back down when you take it out of the oven.
After blind baking the crust, make the filling. In a large, microwaveable bowl, heat the dark chocolate and butter together for 20 seconds at a time, stirring in between, until fully melted and smooth. Let it cool for a few minutes until just warm to the touch.
Add the sugars, corn syrup, cocoa powder, salt, eggs, vanilla, bourbon, eggs, and egg yolk. Whisk for 1-2 minutes, until very smooth and glossy.
Fold in the pecans, then pour the filling into the prepared pie crust. Arrange more pecans on top if desired. Brush the edges of the crust with the egg wash.
Reduce the oven temperature to 325℉ and bake for 50-55 minutes, or until the pie is set around the edges and the center still has a slight jiggle like jell-o. Let the pie cool for two hours on the counter before transferring to the fridge to cool completely before serving.