Preheat oven to 400 degrees Fahrenheit. Roll pie crust out and place in pie crust, prick crust with a fork to prevent air bubbles. Set aside.
In a microwave safe bowl melt butter and unsweetened chocolate together. Stir in beaten eggs and corn syrup.
Add in the remaining ingredients—brown sugar, flour, vanilla, and salt. Fold in pecan halves. Pour into unbaked pie crust. Use a fork or your fingers to flip the pecans all rounded side up. Bake for 10 minutes.
Reduce heat to 325 degrees Fahrenheit. Bake 35-40 minutes. If crust starts to brown too much cover the edge of crust with foil.
Cool completely before serving. Try serving it with vanilla ice cream or whipped cream.