Preheat oven to 375°F (190°C) and grease a 9x9 inch baking dish.
In a large mixing bowl, whisk together the eggs, cottage cheese, garlic powder, salt, and pepper until well combined.
Stir in the almond flour and baking powder until no dry clumps remain.
Fold in the shredded zucchini, chopped spinach, red bell pepper, and green onions.
Stir in half of the shredded cheddar cheese.
Pour the mixture into the prepared baking dish and spread evenly.
Sprinkle the remaining cheddar cheese over the top.
Bake for 40 to 45 minutes, or until the center is set and the top is golden brown.
Allow the bake to rest for 10 minutes before slicing and serving.