Combine the first 3 ingredients in a Dutch oven, and cook over medium-high heat until browned, stirring to crumble. Drain well; return meat mixture to pan. Stir in tomato and next 9 ingredients (tomato through garlic); bring to a boil. Reduce heat, and simmer 20 minutes or until squash is tender, stirring occasionally. Stir in olives and jalapeño; cook 5 minutes.
Ladle chili into soup bowls, and top each serving with 1 tablespoon green onions and 1 teaspoon cilantro.