Preheat the oven to 405 degrees.Lay out your jicama noodles and snip them with a scissor to divide into smaller sized noodles, similar to shoestring fries.When done, lay your noodles onto two large baking trays, drizzle with olive oil and toss together to combine and coat noodles.Season with a generous amount of salt and then evenly season with onion powder, cayenne pepper and chili powder. Toss again to combine and then lay them out, trying hard not to crowd them.Bake in the oven for 15 minutes, turn over and bake another 10-15 minutes or until they reach your doneness preference. Divide onto plates and enjoy as a snack or a side dish!