Preheat the oven to 200°C.
Cut any larger potatoes in half to ensure they are evenly sized, and place in a pan of cold salted water. Bring to the boil and cook for 5 minutes. Drain well and allow to stand for a couple of minutes to steam dry.
Place in a large bowl and coat well with low-calorie cooking spray.
Add the crushed garlic, herbs and Parmesan, and season with some salt and pepper. Toss well to ensure the potatoes are evenly coated.
Scatter onto a baking sheet and place in the oven. Roast for around 20-25 minutes, turning the potatoes halfway through, until the potatoes are soft inside and the coating is golden and crisp.