01 - Preheat oven to 375°F. Line a baking sheet with parchment paper.
02 - In a mixing bowl, whisk together the all-purpose flour, baking powder, and fine sea salt until evenly distributed.
03 - Add shredded sharp cheddar, grated Parmesan, cold diced butter, chopped chives, smoked paprika, and garlic powder. Work the mixture with your fingertips until it resembles coarse, crumbly crumbs.
04 - Drizzle in cold water one tablespoon at a time, gently mixing until the dough just comes together and holds its shape. Avoid overworking.
05 - Turn the dough onto a lightly floured surface and roll out to approximately 1/8-inch thickness. Cut into 2-inch squares or preferred shapes using a knife or cookie cutter.
06 - Transfer the cut pieces to the prepared baking sheet, spacing them evenly to allow for proper crisping.
07 - Bake for 16–18 minutes, or until the edges are golden brown and the centers are crisp throughout.
08 - Let the snacks cool on a wire rack. Serve warm or at room temperature.