Preheat oven to 220°C.
Score zucchini flesh in crosshatch, ½ cm deep.
Brush with oil, season with ½ tsp salt and pepper.
Place cut-side up in baking dish.
Combine mozzarella, Pecorino, egg, almond flour, garlic, parsley, oregano, ¼ tsp salt.
Spoon topping evenly over zucchini, pressing lightly.
Bake 18-22 min until zucchini is tender and cheese is melted with deep golden-brown spots.
Broil 1 min for extra color if needed.
Rest 3 min.
Garnish with extra parsley.
Serve hot with arugula, lemon wedges, and tzatziki on the side.
