Preheat oven to 400 F
Peel and slice onions using a mandolin to ensure they are all the same thickness
Grate Parmigiano Reggiano and spread it on a lined baking sheet; place onion rings on top
Brush them with olive oil, season with garlic powder, smoked paprika and black pepper
Bake for about 18 minutes
Let cool for a few minutes
Sprinkle some chives and enjoy the crunch!
