Objective: To bake chips without using a deep fryer,

Which of the following solutions is more sound in terms of naive physics reasoning?

OPT: - place the potatoes into a fryer and then slice them and lay them flat on a pan to cook. - cut potatoes thin and then coat them with oil, layer them on a tray and bake them.
cut potatoes thin and then coat them with oil, layer them on a tray and bake them.