Preheat oven to 400°F. Line baking sheet with parchment paper.
Peel potatoes, parsnips, and carrots. If carrots and parsnips are too large, cut them in half lengthwise, otherwise leave them whole. Cut potatoes into wedges.
Place the vegetables in a large bowl and add salt, pepper, spices, herbs, and oil. Toss well to combine. Add more oil if too dry.
Spread the vegetables evenly on prepared baking sheet.
Bake for 45 minutes to 1 hour, until crispy on the outside.