Homemade Parmesan Herb Biscuits

Name: Homemade Parmesan Herb Biscuits
Ingredients: 2 cups (10 oz./315 g) all-purpose flour, plus more for dusting; 1/2 tsp. baking soda; 1 tsp. baking powder; 1 tsp. kosher salt; 1 Tbs. finely chopped fresh rosemary; 1 Tbs. finely chopped fresh thyme; 1/3 cup (1 1/2 oz./45 g) grated Parmesan cheese, plus more for sprinkling; 8 Tbs. (1 stick) (4 oz./125 g) cold unsalted butter, cut into 1/2-inch (12-mm) pieces; 1 cup (8 fl. oz./250 ml) cold buttermilk, plus more as needed; Olive oil for brushing