In a 4- to 6-quart slow cooker, place the chicken thighs.
Add the avocado oil, paprika, cumin, oregano, sea salt, and black pepper.
Add the onion, garlic, tomatoes, chicken broth, and chipotle chile in adobo sauce. Cover and cook on LOW for 8 hours or until the chicken is tender and the sauce is slightly thickened.
Serve with the cheddar cheese, avocado, cilantro, and radish toppings.