Add the chicken broth, diced potatoes, bacon bits, garlic powder, onion powder, salt, and black pepper to the slow cooker.
Stir the ingredients once to combine, then cover and cook on low for 7 hours.
After cooking, use a potato masher to break up some of the potatoes for a thicker texture while leaving some chunks.
Stir in the shredded cheddar cheese and sour cream until the cheese melts and the soup becomes smooth.
Ladle the soup into bowls and top each serving with chopped green onions.