Preheat oven to 425°. Line a baking sheet with parchment paper.
In a large bowl, stir together flour, sugar, and 1 teaspoon pepper. Using a pastry blender, cut in bacon drippings and cold butter until mixture is crumbly. Stir in cheese, buttermilk, and cooked bacon just until combined.
Turn out dough onto a heavily floured surface. Fold dough in half until it comes together, 3 to 4 times. Pat or roll dough to 1 inch thick. Using a knife dipped in flour, cut dough into 2-inch squares. Place biscuits 2 inches apart on prepared pan.
In a small bowl, whisk together egg and 1 tablespoon water; lightly brush over top of biscuits. Sprinkle with remaining ¼ teaspoon pepper. Freeze until cold, about 10 minutes.
Bake until golden brown, 12 to 14 minutes.
Recipe by Taste of the South at https://tasteofthesouthmagazine.com/bacon-cheddar-biscuits-2/