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, granulated sugar, baking powder, baking soda, salt, and smoked paprika until evenly combined.
03 - Add cold, cubed butter to the flour mixture and cut in using a pastry cutter or fingertips until the mixture forms coarse crumbs.
04 - Fold in shredded cheddar, pepper jack cheese, and diced jalapeños until evenly distributed.
05 - In a separate bowl, whisk together eggs, buttermilk, and vanilla extract. Pour into the dry mixture and gently mix until just combined, avoiding overmixing.
06 - Transfer dough onto a lightly floured surface and pat into a 1-inch thick round.
07 - Cut dough into 8 wedges and place them on the prepared baking sheet, ensuring adequate spacing.
08 - Brush scone tops with heavy cream, sprinkle with additional cheddar cheese, and garnish with jalapeño rings if desired.
09 - Bake in the oven for 20 to 22 minutes, or until scones are golden and fully baked through.
10 - Allow scones to cool on a rack for 10 minutes before serving.