In a saucepan heat the olive oil and add the onion, bell pepper, one tablespoon of chili powder, one tablespoon of taco seasoning and ground chicken. Cook on medium high heat until the chicken is browned.
Add the chicken mixture to the crockpot with the crushed tomato and black beans.
In the same saucepan, add the cut up sweet potatoes (peeled or unpeeled, your preference!) with the remaining spices, garlic, water and chicken stock and stir to combine. Bring to a low boil and cook for approximately ten minutes, or until the sweet potatoes are soft. Using an immersion blender or regular blender, combine the mixture to get a thick, smooth texture.
Add the sweet potatoes mixture to the crock pot and mix well.
Cook on low for 4-6 hours.