Combine all your ingredients in a 6 quart slow cooker, stir well. Cover and cook on low for 6-8 hours or on high for 3-4 hours, stirring occasionally if possible.
Add the onion, bell peppers, tomatoes, tomatoes and green chilis, chicken broth, tomato paste, adobo pepper, and black beans. Stir, place the lid on the slow cooker and cook on high for 5 hours ...