Preheat oven to 400 degrees. Wash and dry potatoes; cut into rounds.
Place potatoes in a large bowl and coat well with olive oil.
Add the Cajun seasoning and stir to coat with seasoning.
Place in a single layer on your baking sheet or iron skillet.
Bake on 400 degrees for 20 minutes, turn and bake 20 minutes more.
Remove from oven and add cheeses, bacon bits and parsley.
Top each individual serving with sour cream and enjoy!