01 - Preheat the oven to 400°F and line a baking sheet with parchment paper.
02 - In a large bowl, whisk together flour, baking powder, salt, black pepper, and smoked paprika.
03 - Add cold cubed butter and rub into the flour mixture using fingertips or a pastry cutter until coarse crumbs form.
04 - Stir grated cheddar and chopped herbs into the crumbly mixture.
05 - Whisk milk and sour cream together in a separate bowl, then gently fold into dry ingredients until just combined without overworking.
06 - Turn dough onto a lightly floured surface and pat into a 1-inch thick circle.
07 - Cut the dough into 8 wedges and arrange on the prepared baking sheet.
08 - Beat the egg and brush over the tops of the scones for a glossy finish.
09 - Bake for 16 to 18 minutes until golden brown and cooked through.
10 - Allow to cool slightly on a wire rack and serve warm with softened butter.