Pre-heat oven to 400 degrees and line two baking sheets with tin foil. Spray foil with non-stick cooking spray.
Using a mandoline, thinly slice the turnips into chips and place in a large mixing bowl.
Drizzle turnip slices with olive oil, salt and pepper. Toss well to coat evenly.
Spread chips in an even layer on baking sheets. Be careful not to over-crowd.
Bake for 20-25 minutes, turning once halfway through to ensure even cooking.
Let cool 10 minutes to continue crisping then serve.
Notes
Note: The thinner you slice the chips, the more prone they are to burning. I prefer them on the crispier side but you are welcome to cut them slightly thicker.