Cut the chicken breast into small, popcorn-sized cubes and season with half of the garlic powder, onion powder, salt, and pepper.
Lightly coat the chicken bites with avocado oil and air fry at 400°F for 8-10 minutes until golden and cooked through.
While the chicken cooks, place the popcorn kernels in a large pot with a tight-fitting lid over medium-high heat.
Shake the pot constantly until the popping slows to 2 seconds between pops, then remove from heat immediately.
Drizzle the popped corn with olive oil and toss to coat evenly.
In a small bowl, mix the nutritional yeast with the remaining spices.
Combine the warm popcorn and chicken bites in a large bowl, sprinkle with the nutritional yeast mixture, and toss until every piece is coated.