sea salt
Heat oven to 400 degrees
Slice all vegetables wafer-thin using a knife or the slicing blade of a food processor.
Spray some oil onto a couple of large baking sheets and brush to cover surface. Heat the baking sheets for 5 minutes in the preheated oven.
Place vegetables on the baking sheets in a single layer and lightly spray with oil. Cook in the oven for 10 to 12 minutes, turning halfway through. Transfer to a paper towel and sprinkle with sea salt.
You can also deep fry the vegetables adding each vegetable separately until crisp and golden brown.