01 - Preheat oven to 400°F and line a baking sheet with parchment paper.
02 - In a large mixing bowl, whisk together all-purpose flour, baking powder, baking soda, salt, chai spice blend, and light brown sugar until evenly distributed.
03 - Cut in the cold, cubed unsalted butter using a pastry cutter or fingertips until the mixture resembles coarse crumbs.
04 - Stir in grated sharp cheddar cheese and chopped mini pretzel twists until just combined.
05 - In a small bowl, whisk cold buttermilk, one large egg, and thick caramel sauce until integrated.
06 - Pour wet mixture into dry ingredients and gently stir until incorporated. Avoid overmixing.
07 - Turn dough onto a lightly floured surface and pat into a round, 1-inch thick disc. Slice into 8 equal wedges with a sharp knife.
08 - Transfer wedges onto prepared baking sheet. Brush tops with beaten egg and sprinkle with flaky sea salt and extra pretzel bits as desired.
09 - Bake for 16 to 18 minutes until golden brown and fragrant.
10 - Allow scones to cool slightly on the baking sheet, then drizzle with extra caramel sauce before serving.