01 - Set oven to 375°F and line a baking sheet with parchment paper.
02 - Whisk together the flour, baking powder, and sea salt in a mixing bowl.
03 - Add the shredded cheddar, grated Parmesan, cold diced butter, chives, smoked paprika, and garlic powder. Work the mixture with your fingertips until it becomes crumbly.
04 - Drizzle in cold water one tablespoon at a time, mixing gently until the dough just comes together and holds its shape.
05 - Turn the dough out onto a lightly floured surface and roll to a 1/8-inch thickness. Cut into 2-inch squares or desired shapes and arrange on the prepared baking sheet.
06 - Bake for 16 to 18 minutes until the edges are golden and crisp.
07 - Transfer to a wire rack to cool. Serve warm or at room temperature.