01 -  Preheat oven to 400°F and line a baking sheet with parchment paper. 
 02 -  In a large bowl, whisk together flour, baking powder, baking soda, salt, chai spice blend, and brown sugar until evenly incorporated. 
 03 -  Add cold, cubed butter to the bowl and use a pastry cutter or fingertips to blend until the mixture resembles coarse crumbs. 
 04 -  Fold in grated cheddar cheese and chopped pretzel twists to distribute throughout the mixture. 
 05 -  In a separate bowl, whisk together cold buttermilk, egg, and thick caramel sauce until smooth. 
 06 -  Pour wet mixture into dry ingredients. Gently combine until just incorporated; do not overmix. 
 07 -  Transfer dough to a floured surface, pat it into a 1-inch thick round, and slice into eight wedges. 
 08 -  Place wedges onto prepared baking sheet. Brush tops with beaten egg, and sprinkle with flaky sea salt and extra pretzel bits as desired. 
 09 -  Bake in the center of the oven for 16 to 18 minutes until the scones are golden brown. 
 10 -  Allow scones to cool slightly, then drizzle with additional caramel sauce before serving.