Preheat oven to 425 degrees. Line a baking sheet with aluminum foil, and spray lightly with cooking spray or Avocado OIl spray.
Set up a breading station using 3 containers. In one container, add flour. In another container, add eggs and water, and whisk to combine
In a third container, add Panko, salt, pepper, onion powder, garlic powder, paprika, cayenne, and 2 Tablespoons cheese. Mix together well
Working in batches, dredge green beans in flour, and shake off excess. Add to egg wash, and coat fully. Add to Panko mixture. Toss to coat, and use hands to gently press Panko to ensure it adheres to beans. Transfer beans to baking sheet, leaving a little space between the beans. Spray again lightly with cooking spray or Avocado OIl spray
Bake beans for 12-15 minutes, until golden. Remove from oven, sprinkle with remaining cheese