Preheat your oven to 350°F (175°C).
Melt the chocolate and butter together in a saucepan over low heat, stirring until smooth.
In a large mixing bowl, combine corn syrup, brown sugar, and salt.
Add the melted chocolate mixture to the bowl, stirring well.
Whisk in the eggs one at a time until fully incorporated.
Stir in the vanilla extract.
Fold in the halved pecans until evenly distributed.
Pour the mixture into the pre-made pie crust.
Bake for 45-50 minutes or until the filling is set.
Allow to cool for at least 2 hours before serving.