Prep the flax “egg”: In a small bowl, mix ground flaxseed with water. Stir and let it thicken for 5–10 minutes.
Grate and salt the zucchini: Coarsely grate the zucchinis into a bowl.
Toss with 1 teaspoon salt and let sit for 10 minutes to draw out moisture.
Squeeze out liquid: Transfer zucchini to a clean kitchen towel or cheesecloth. Twist and squeeze firmly until most of the liquid is released. The drier the better.
Build the batter: In a mixing bowl, combine squeezed zucchini, flax “egg,” chickpea flour, cornstarch, scallions, garlic, herbs, lemon zest/juice, pepper, and baking powder if using.
Mix until evenly combined. The mixture should be thick and scoopable, not wet.
Taste and adjust: Cook a small test patty in a skillet or air fryer for 2–3 minutes to check seasoning. Add more salt, pepper, or lemon if needed.
Preheat the air fryer: Set to 390°F (200°C) for 3–5 minutes.
Lightly spray the basket with oil.
Shape the fritters: Scoop about 2 tablespoons of batter per fritter. Gently flatten into 1/2-inch thick rounds. Don’t make them too thick or they won’t crisp.
Air fry the first side: Arrange fritters in a single layer without crowding.
Lightly spray tops with oil. Cook for 7–9 minutes until golden at the edges.
Flip and finish: Flip carefully with a thin spatula, spray again, and cook 5–7 more minutes, until crisp and cooked through.
Serve: Sprinkle with a pinch of salt while hot. Add lemon juice or your favorite dip.
Repeat with remaining batter.