Mix parsnip, 2 Tbsp. olive oil, and ¼ tsp. salt on prepared baking sheet. On second baking sheet, toss sweet potatoes, ½ tsp. olive oil, and a pinch of salt and pepper. Place parsnips on top rack of oven, and sweet potatoes on bottom rack, and cook 15-20 minutes, or until sweet potatoes are tender. Remove sweet potatoes from oven and sprinkle with half of the seasoning mix. Flip parsnips over and bake 10-15 minutes more, or until they are golden brown. Watch parsnips closely, as they brown quickly. You may have to pull some of the chips out if they finish first and allow the rest to keep baking. Sprinkle chips with remaining seasoning mix.