Finely dice the red bell pepper and zucchini, and roughly chop the baby spinach.
In a medium bowl, whisk together the large eggs and liquid egg whites until well combined and slightly frothy.
Heat the extra virgin olive oil in a non-stick skillet over medium heat.
Add the diced bell pepper and zucchini to the skillet, sautéing for 3-4 minutes until they are tender-crisp.
Lower the heat slightly and pour the egg mixture into the skillet with the vegetables.
Use a spatula to gently move the eggs across the pan, creating soft curds until they are nearly set.
Stir in the baby spinach, sea salt, black pepper, and garlic powder, continuing to cook until the spinach is wilted.
Sprinkle the crumbled feta cheese over the scramble and remove from heat.
Garnish with fresh parsley and serve immediately while hot and fluffy.