In a large pot over medium heat, melt together olive oil and butter
Add in the carrots, celery and onion and season with sea salt and pepper. Cook for 3 minutes. Add the kale and garlic and cook for about 2 minutes more.
Add the broth and water and bring to a boil. Simmer over low heat, stirring occasionally for about 20 minutes.
Add the brown rice and chicken to the pot and stir. Simmer for about 10 minutes