Prep the veggies: Roughly chop the green onions and set them aside. Shred the zucchinis using a grater and transfer them to a large mixing bowl.
Add ¼ teaspoon of salt to the shredded zucchini and mix thoroughly to incorporate the salt. Then, using a cheesecloth, squeeze out the excess water.
Preheat the air fryer to 360°F (182°C).
Transfer the squeezed shredded zucchini to a large mixing bowl. Add the green onions and all other ingredients, including the egg, additional salt, baking powder, garlic powder, all-purpose flour, cheese, salt, and pepper. Mix everything until well combined.
Portion the zucchini mixture into 8-10 medium-sized (3 tablespoons) patties. Then carefully transfer each portion into the preheated air fryer and gently form them into patties using a rubber spatula.
Air fry zucchini patties for 10-12 minutes: First, spray or brush one side with high-heat neutral cooking oil, flip them halfway through, and coat the other side with oil again. Cook until golden and crispy!
Serve the air fryer zucchini fritters hot with a dollop of sour cream or Greek yogurt on top. Enjoy!