Combine first 3 ingredients in a small bowl; stir until blended. Combine chile powder mixture and duck in a large zip-top plastic bag. Seal and marinate in refrigerator 2 hours, turning bag occasionally. Remove duck from bag; discard marinade.
Heat a grill pan over medium-high heat. Coat pan with cooking spray. Sprinkle duck with salt and pepper. Add duck to pan; cook 5 minutes on each side or until desired degree of doneness.
Wine note: This duck is tailor made for a powerful but thickly soft red that can cushion the bird's sweet spiciness. Try a top Argentinian malbec, such as the mouth-filling 2005 Otello Malbec 2005 from Mendoza ($16). --Karen MacNeil