Preheat your oven to 350°F and line a baking sheet with parchment paper.
If you're making oat flour from scratch, blend your rolled oats until they form a flour-like consistency.
In a bowl, mix together the oat flour, cold butter, baking powder, pumpkin pie spice, pumpkin purée, and brown sugar until crumbly.
Add in the milk gradually until a thick dough forms, then fold in the chocolate chips.
Shape the dough into a round scone shape and place it on the prepared baking sheet.
Sprinkle some brown sugar on top for an extra touch of sweetness.
Bake for 18-20 minutes until golden brown.
Let it cool for a bit, then dig in and enjoy your homemade pumpkin chocolate chip scone!