1. 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.
2. 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.