Preheat the oven to 450. Line a baking sheet pan with parchment paper.
In a liquid measuring cup, measure the buttermilk. Place in the freezer to get extra cold while you prepare the remaining ingredients.
1¼ cup buttermilk
In a small bowl, melt butter in the microwave. Set aside to cool.
½ cup butter
In a large bowl, combine the flour, sugar, baking powder, salt, garlic powder, onion powder, and black pepper.
2 cups all purpose flour, 1 tablespoon sugar, 1 tablespoon baking powder, 1 teaspoon salt, ½ teaspoon black pepper, ¼ teaspoon garlic powder, ¼ teaspoon onion powder
Remove the cold buttermilk from the freezer. Add the butter and mix well with a whisk or fork. It should form a clumpy texture. Pour the wet ingredients into the dry ingredients and stir well with a rubber spatula until mostly combined, but definitely still some white streaks remaining.
Add the cheese and the chives. Continue mixing gently until incorporated. Be careful not to overmix.
3 oz About 1 slightly heaping cup extra sharp white cheddar cheese, finely grated and cold, 3 tablespoon diced chives
Using a ¼ cup scoop, scoop biscuit dough onto the prepared pan. It should make about 12 biscuits. Bake for 15-18 minutes, until golden brown and cooked through.
Allow to cool at least 5 minutes. Brush lightly with more melted butter, sprinkle with additional chives, and serve warm.
3 tablespoons butter