Heat the oven to 350°F, fit the crust into a 9-inch pie plate, crimp the edge and chill it while preparing the filling.
Toast the pecans on a sheet pan until fragrant and one shade darker, 7 to 9 minutes, then cool them for 5 minutes.
Scatter the chocolate and toasted pecans evenly in the chilled crust.
Whisk the eggs, corn syrup, brown sugar, melted butter, bourbon, vanilla and salt until smooth but not foamy.
Pour the filling slowly over the nuts and set the pie on a sheet pan.
Bake until the edges are puffed and the center trembles as one piece rather than sloshing, 50 to 55 minutes; shield the crust edge if needed.
Cool completely for at least 3 hours before slicing with a clean, warm knife.