Wash and dry thoroughly. Strip the leaves from the tough stems. Tear leaves into chip-size pieces (about 2-3 inches). Dry them like you mean it—moisture is the enemy of crunch.
Set to 325°F (160°C). Lower heat = crispy chips that don't burn. Trust the process.
In a large bowl, add kale, drizzle with oil, and massage gently for 15-20 seconds. Sprinkle salt, garlic powder, and paprika. Toss to coat evenly. If using nutritional yeast, add half now and half after cooking.
Arrange kale in a loose, even layer. Some overlap is fine, but don't pack it . Work in batches for best results.
Cook 4-6 minutes, shaking halfway. Start checking at minute 3—kale goes from perfect to “uh-oh” fast. Remove pieces that finish early, let the rest go another 30-60 seconds.
While still warm, toss with remaining nutritional yeast (if using) and a tiny pinch more salt. Add lemon zest or chili flakes for extra pop.
Spread on a wire rack or paper towel for 2-3 minutes. They crisp up as steam escapes—science for the win.