01 - Slice each chicken breast into 6 equal pieces, yielding 12 portions. In a bowl, combine cultured buttermilk and hot sauce if using. Add chicken pieces, cover, and marinate for at least 20 minutes, or up to overnight in refrigeration.
02 - In a shallow dish, combine all-purpose flour, paprika, garlic powder, salt, and black pepper. Remove chicken from marinade, allowing excess to drip off. Dredge each piece thoroughly in the flour mixture, pressing gently to ensure a good coating.
03 - Heat approximately 1 inch of vegetable oil in a large skillet over medium-high heat to around 350°F (175°C). Carefully fry chicken pieces in batches, ensuring not to overcrowd the skillet, for about 3–4 minutes per side, until golden brown and cooked through to an internal temperature of 165°F (74°C). Drain on a wire rack or paper towels.
04 - Preheat your waffle iron according to manufacturer's instructions. In a large mixing bowl, whisk together all-purpose flour, sugar, baking powder, and salt. In a separate bowl, whisk together whole milk, large eggs, melted unsalted butter, and vanilla extract. Pour the wet ingredients into the dry ingredients and stir just until combined; do not overmix.
05 - Lightly grease the preheated waffle iron. Spoon approximately 2 tablespoons of batter per mini waffle, making sure not to overfill. Close the waffle iron and cook until golden brown, typically about 3 minutes. Repeat this process until you have produced 24 mini waffles.
06 - Place one piece of fried chicken between two mini waffles. Drizzle with pure maple syrup and melted unsalted butter, if desired. Secure each slider with a toothpick or small skewer. Garnish with chopped fresh chives, if using. Serve immediately.