01 - Preheat oven to 400°F (204°C). Line a baking sheet with parchment paper.
02 - Whisk together flour, baking powder, baking soda, salt, and black pepper in a large mixing bowl.
03 - Add cold cubed butter and cut it into the flour mixture using a pastry cutter or fingertips until the mixture resembles coarse crumbs.
04 - Gently fold in chopped parsley, chives, thyme, and crumbled feta cheese until evenly distributed.
05 - In a separate bowl, whisk together cold buttermilk and egg until thoroughly blended.
06 - Pour wet ingredients into dry mixture. Stir just until combined; do not overmix.
07 - Transfer dough to a lightly floured surface and gently knead a few times. Form into a 7-inch round disc about 1-inch thick.
08 - Slice dough into 8 equal wedges and space them apart on the prepared baking sheet.
09 - Bake for 16–18 minutes or until golden brown on top and cooked through.
10 - Allow scones to cool on a wire rack for at least 10 minutes before serving.