Preheat your oven to 400°F and line a large rimmed baking sheet with parchment paper.
Place the diced bell peppers, zucchini, and red onion on the baking sheet and drizzle with avocado oil, sea salt, and black pepper.
Toss the vegetables to coat evenly and roast for 15 to 20 minutes until they are tender and slightly caramelized around the edges.
While the vegetables are roasting, whisk together the whole eggs, liquid egg whites, Greek yogurt, and garlic powder in a medium bowl until completely smooth.
Heat a large non-stick skillet over medium-low heat. Pour in the egg mixture and let it sit for 30 seconds to begin setting.
Using a silicone spatula, gently push the eggs from the edges toward the center, creating soft, pillowy curds.
Continue cooking slowly until the eggs are mostly set but still look slightly moist.
Remove the roasted vegetables from the oven and fold them gently into the scrambled eggs.
Divide the mixture into bowls and serve immediately while hot.