Stir together first 5 ingredients in a large bowl. Whisk together buttermilk and next 2 ingredients in a small bowl; stir buttermilk mixture into flour mixture just until combined.
Cook batter in a preheated, oiled mini-style waffle iron 3 1/2 to 4 minutes or until golden (about 1/2 Tbsp. batter per waffle). Top waffles with chicken, and drizzle with Peach-Horseradish Maple Syrup.
We tested with a Sunbeam Mini Waffle Maker. If you don't have a mini waffle iron, use 1/2 cup batter per waffle in a traditional (10- x 8 1/2-inch) waffle iron, and cook 4 to 5 minutes or until golden; cut each waffle into fourths.