1 1/2 c. all-purpose flour, spooned and leveled
2 tsp. baking powder
1/2 tsp. kosher salt
1/2 tsp. freshly ground black pepper, plus more for sprinkling
2 large eggs
1 c. whole buttermilk
4 tbsp. (1/2 stick) unsalted butter, melted
4 oz. sharp Cheddar cheese, grated (about 1 cup)
2 oz. Parmesan cheese, grated (about 1/2 cup), plus more for top
4 slices bacon, cooked and crumbled
3 tbsp. chopped fresh chives
Cooking spray