Chop the tough end off of each Brussels sprout and peel off as many outer leaves as possible.
Once you've peeled 2-3 layers of leaves [some will peel more easily and have more leaves than others], you will be left with a light green/yellow inner portion of the Brussels sprout. Do not discard this part as you can use them in another recipe.
Once you've peeled off as many leaves as possible, transfer to a parchment paper lined baking sheet.
Drizzle with olive oil, sea salt + black pepper.
Using your hands, massage the oil and spices into each leave.
Spread out the leaves as much as possible to prevent too much overlap.
Bake in oven for about 20 minutes, flipping half way through. Keep an eye on the oven as the Brussels sprout leaves can burn quickly.
After 20 minutes if your leaves aren't crispy yet, turn oven off and leave the "chips" in the oven to crisp up.
Remove from oven, let cool completely and enjoy!
Recipe by Angela Freed at https://www.angelafreed.com/crispy-brussels-sprout-chips/