Preheat oven to 300 degrees and line two baking sheets with parchment paper.
Place the kale leaves in a large bowl.
Add the olive oil and lemon juice. Massage into the kale leaves, making sure that they're evenly coated.
In a food processor, add nutritional yeast, cashews, sunflower seeds, and garlic powder. Pulse until mixture is a texture similar to bread crumbs.
Add the nutritional yeast mixture to the kale leaves and toss to coat.
Spread the kale leaves evenly among the baking sheets.
If any of the yeast mixture is remaining at the bottom of the bowl, sprinkle over the top of the kale.
Bake the kale for 15 minutes, then flip the leaves and place back into the oven.
Bake for another 10 minutes, or until the leaves are crispy, but not burned.
Remove from the oven and allow to cool before serving.
Store in an airtight container or storage bag.