In a Dutch oven or small stock pot heat olive oil over medium heat. Brown sausage, stirring often for about 5 minutes. Add onion and garlic; continue to cook over medium heat until cooked through.
Drain fat, if necessary.
Return to heat and add chicken broth and water. Bring to a boil. Stir in tortellini, oregano, basil, and parsley. Cook for 5-6 minutes. Stir in chopped kale. Cook for an additional 3 minutes. Serve with fresh Parmesan cheese.