Heat the oven to 350 degrees.
Line a large baking sheet with foil and spray with canola oil.
Make 1 even layer of chips on the baking sheet and top with chicken. Then add a generous amount of cheese (and I mean a lot of cheese). Repeat this step one more time (think lasagna).
Place the nachos in the oven and cook for 10 to 15 minutes or until the cheese is nicely melted and slightly browned.
Remove from the oven and top (to your liking) with the red onions, radishes, cilantro, buffalo sauce and sour cream drizzle.