Caribbean Chicken without stew

1 1/2 tablespoons oil 1 lb boneless chicken breast , 1-inch cubes 1/4 teaspoon whole black peppercorn 1/4 teaspoon allspice berry 1 cup onion , 3/4-inch dice[...]

3/4 lb sweet potato , peeled, halved lengthwise & cut crosswise into 1/2-inch half-rounds 1 tablespoon olive oil 1/2 lb lean ground chicken 1 large nectarine[...]

3/4 lb sweet potato , peeled, halved lengthwise & cut crosswise into 1/2-inch half-rounds 1 tablespoon olive oil 1/2 lb lean ground chicken 1 large nectarine[...]

1 1/2 tablespoons oil 1 lb boneless chicken breast , 1-inch cubes 1/4 teaspoon whole black peppercorn 1/4 teaspoon allspice berry 1 cup onion , 3/4-inch dice[...]