- Put potatoes in the bottom of your slow cooker crock. Scatter flour over the potatoes; toss to coat.
- Scatter bacon bits, red onion, garlic, chicken bouillon, ranch dressing mix, parsley, seasoned salt, and black pepper over the potatoes.
- Pour water into the slow cooker.
- Cook on Low 7 to 9 hours.
- Pour half-and-half into the soup; cook another 15 minutes.
- Garnish with Cheddar cheese and green onion to serve.