HEAT oven to 400°F.
TOSS potatoes with oil, salt and black pepper; spread onto bottom of foil-lined 17x11-1/2x3/4-inch pan sprayed with cooking spray.
BAKE 40 min., stirring occasionally. Cool 5 min. Meanwhile, beat peanut butter, dressing, lime juice, hot sauce, sugar, ginger and garlic in large bowl with whisk until well blended.
ADD potatoes to peanut butter mixture along with the red peppers, bean sprouts and onions; mix lightly. Sprinkle with nuts.