01 - Heat oven to 400°F. Line a baking sheet with parchment paper.
02 - In a large bowl, whisk together flour, baking powder, salt, pepper, and smoked paprika.
03 - Add cold, cubed butter and rub into flour using fingertips or pastry cutter until mixture resembles coarse crumbs.
04 - Stir in grated cheddar, chives, and parsley.
05 - Whisk milk and sour cream in a separate bowl; pour into dry mixture and gently fold with a fork until just combined.
06 - Turn dough onto a floured surface and gently pat into a 1-inch thick round.
07 - Cut into 8 wedges and place on prepared baking sheet spaced apart.
08 - Whisk egg with 1 tablespoon milk and brush over scone tops.
09 - Bake for 16 to 18 minutes until golden brown. Allow to cool slightly before serving.