In a large bowl, combine flour, sugar, salt, baking powder, and pumpkin pie spice.
Use a cheese grater to shred the butter into the flour mixture and then use a pastry blender to incorporate the butter into the flour.
Add chocolate chips and stir.
In a separate bowl, combine discard, egg, vanilla extract, and pumpkin puree. Stir to combine and then pour the wet ingredients into the dry.
The dough will be very crumbly. Use your hands to knead the dough for 3-4 minutes. Resist the urge to add liquid. The dough will come together.
Roll the dough out into a 10 inch round disc shape and cut it into 8 equal slices.
Place the slices onto a parchment lined baking sheet and place the pan in the freezer for 15 minutes while the oven preheats to 400°F.
Once the oven has preheated, brush the scones with heavy cream and then bake for 20-25 minutes.