Remove the tough stems form the bunch of kale by holding the stem part in one hand and running your other hand down the length of it. Hand-tear the leaves into chip-size pieces, rinse and place on a kitchen towel and pat dry.
In a small bowl combine the nutritional yeast, Sriracha seasoning, garlic powder, sugar and salt.
Place the kale leaves in a large bowl and drizzle with olive oil until coated. Add the seasoning and toss to coat.
Place kale leaves in a single layer, without overlapping, onto dehydrator trays. Cover, set the temperature to 115 degrees and turn on your food dehydrator. Dehydrate for 3 to 5 hours or until the kale is crisp.
Store in an airtight container for up to 2 months.