Nichole's Chicken Cauliflower Soup
1 cup grated, reduced fat Parmesan cheese 1 head cauliflower, cut into small florets 1 onion, diced 2 cooked chicken breasts, shredded 2 cups skim milk 2 garlic cloves, minced 2 teaspoons ground black pepper 2 teaspoons salt 3 carrots, peeled and diced 3 stalks celery, diced 5 medium red potatoes, cubed 6 cups chicken broth ¼ cup olive oil