Preheat oven to 400 degrees.
Line large baking sheet with parchment paper.
In large bowl whisk together (flour, sugar, baking powder and salt).
Add 1 stick (1/2 cup) of grated frozen butter, chocolate chips and pecans. Stir gently to combine.
In separate small bowl whisk together the half n half, egg and vanilla.
Pour liquid mixture over the top of the flour mixture.
Gently stir until mixture just holds together. Form into a ball and turn out onto a lightly floured surface.
Using hands, gently press dough into an 8 inch wide circle. Will be about 3/4 inch thick. Cut into 8 equal wedges.
Carefully place wedges of dough on parchment lined baking sheet.
Bake at 400 for approximately 18-20 minutes. Watch carefully so that they become just slightly golden brown, but cooked through. Remove from oven and let cool for 5 minutes before topping with glaze.