Peel the plantain and cut it into ⅛" coins. Don't worry about cutting everything perfectly, just cut them pretty thin.
Put the plantains in a medium bowl. Pour in the olive oil. Start with 2 teaspoons then stir to coat. If you feel like the plantains aren't well coated, add the third teaspoon. Sometimes I felt like 3 teaspoons (which equals 1 tablespoon) was too much, but sometimes 2 wasn't enough. Go with your gut.
Once everything is coated, then sprinkle on the Old Bay. Stir again until everything is nicely coated.
Lay them on a single layer on the baking sheet. If you feel like the plantains need more Old Bay, go ahead and sprinkle some more on.
Cook for 20-25 minutes, and turn them halfway through.
Recipe by Cooking is Messy at https://www.cookingismessy.com/2015/02/09/old-bay-plantain-chips/