Preheat oven to 400 degrees F. Lightly coat two baking sheets with cooking spray.
In a large bowl, combine the potatoes, 2 tablespoons of olive oil, smoked paprika, salt and pepper. Toss to coat the potatoes.
Add the onion wedges and the remaining 1 tablespoon of olive oil. Gently toss to coat.
Transfer the potatoes and onions to the two baking sheets.
Cook until the vegetables are turning brown and the potatoes are tender when pierced with a fork, rotating the baking sheets and flipping the onions halfway through, about 30 minutes total.
Cut each onion wedge into 3 pieces.
Transfer the vegetables to a bowl, and toss with the blue cheese and parsley. Serve.
Notes
Please note that I am not a medical or nutritional professional. I provide nutritional information for my recipes as a courtesy to my readers. It is calculated using the LoseIt! calculator. While I attempt to provide information that is as accurate as possible, you should calculate the nutritional information independently before relying on it.