Preheat the oven to 200 C and grease the baking tray lightly with oil.

Keep all the ingredients ready. Wash and peel the sweet potatoes. Slice them lengthwise and cut them into wedges. In a mixing bowl add olive oil, chilli powder, salt, and oregano. Mix them well.

Now add the sweet potato slices to the mix and toss it well. Transfer them into a greased baking tray.

Now bake the sweet potato for 40 minutes in a preheated oven. After the first 20 minutes, remove the baking tray from oven and turn all the wedges. Return to the oven and bake them again for another 20 minutes or until it's done. If you are going to fry, shallow fry them with little oil in a pan until it's cooked well on both the sides. Once done, remove from baking tray and serve.