1. Preheat oven to 400°. Bake potatoes according to recipe instructions.
2. Heat a large nonstick skillet over medium heat. Add oil; swirl to coat. Add celery; cook 2 minutes, stirring frequently. Add cherries and next 5 ingredients (through salt); cook 1 minute. Stir in chicken and cashews; cook 2 minutes. Sprinkle with onions. Top potatoes with chicken mixture.