Kentucky Derby Chocolate Pecan Pie

1 cup sugar
1/2 cup flour
2 eggs, slightly beaten
1 tsp vanilla
1/2 cup pecans
6 oz pkg. semisweet chocolate chips
1/4 cup butter, melted
1 pie crust

Preheat oven to 325. Combine flour and sugar. Add eggs, vanilla, pecans, chocolate chips and melted butter. Mix and pour into pie crust. Bake 1 hour.