Creamy Roasted Corn Chowder with Bacon

Name: Creamy Roasted Corn Chowder with Bacon
Ingredients: 6 ears sweet yellow corn, shucked; 2 teaspoons olive oil, plus extra as needed; 2 cups water; 2 tablespoons butter; 1 yellow onion, diced; 2 ribs celery, diced; 3 cloves garlic, minced; ¼ cup flour; 2 ½ cups whole milk; 1 - 2 cups chicken broth; 1 large russet potato, peeled and cut into ½ inch cubes; ½ - 1 teaspoon salt, or to taste; ¼ - ½ teaspoon pepper, or to taste; dash cayenne pepper; dash nutmeg; 2 cups finely chopped kale; Homemade bacon bits; Chopped fresh parsley