Wash, peel and cut up potatoes into fries or cubes.
Toss with oil then with taco seasonings.
Add to slightly greased pan and bake in 425°F oven 10 minutes, turn, 10 more minutes.
These will likely come out better (and not need to be turned) if you place a cooling rack on/in the cookie sheet and then place the fries on the rack. The air gets right around the fries. (Tip learned from Rachael Ray).