Preheat your oven to 400°F and line a baking sheet with parchment paper.
Dice the zucchini and red bell pepper into half-inch cubes and mince the garlic.
Toss the vegetables and garlic with avocado oil, sea salt, black pepper, and dried oregano on the prepared sheet.
Roast the vegetables for 15 minutes until they are tender and slightly caramelized, then remove from the oven and reduce heat to 350°F.
In a large bowl, whisk together the large eggs and liquid egg whites until the mixture is well combined and slightly frothy.
Transfer the roasted vegetables into a lightly greased 8x8 inch baking dish, spreading them out in an even layer.
Pour the egg mixture over the vegetables and place the dish in the oven.
Bake for 20 to 25 minutes or until the eggs are completely set in the center and the edges are golden brown.
Let the bake cool for 5 minutes before slicing into squares and serving warm.