Caribbean Chicken Soup With Bananas

1 medium onion , chopped 3 large carrots , peeled and thinly sliced 1 green bell pepper , cut into julienne strips 1 red bell pepper , cut into julienne[...]

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[...]