Preheat oven to 425 degrees F. Line a large baking sheet with parchment paper or a Silpat and set aside.
In a large bowl, whisk together flour, baking powder, sugar, cinnamon, and salt. Cut in the butter, using your fingers, two knives, or a pastry blender. Mix until mixture resembles coarse meal, with mostly pea-size lumps of butter. Stir in the cinnamon chips. Pour heavy cream over the ingredients and stir with a spatula until dough begins to form. Don't over mix.
Transfer dough to a floured countertop and knead dough by hand just until it forms a ball. Form scones by patting the dough into a ¾-inch thick circle. Cut the scones into triangles or use a biscuit cutter for round scones.
Place scones on prepared baking sheet. In a small bowl, combine sugar and cinnamon. Using a pastry brush, lightly the scones with heavy cream. Sprinkle scones with cinnamon/sugar mixture. Bake scones for 12 to 15 minutes, or until light brown. Cool scones on a wire cooling rack and serve. Store leftover scones in an airtight container at room temperature for up to 2 days.