Preheat oven to 400 degrees F.
Line baking sheet with foil and spray with cooking spray.
Peel sweet potatoes then slice very thinly, or use a mandolin to thinly slice into rounds.
Spread sweet potato slices out on prepared baking sheet, then drizzle with olive oil.
Sprinkle salt and pepper.
Bake in preheated oven for 20-25 minutes, flipping the slices over halfway through.
After 20 minutes, sprinkle with blue cheese crumbles then bake another 5 minutes.
Combine yogurt with garlic powder and milk to thin it out and make it thin enough to drizzle.
Transfer sweet potatoes to serving platter then top with bacon, green onions, and yogurt drizzle.
Enjoy!