Preheat your oven to 400°F and line a large baking sheet with parchment paper.
Dice the bell pepper, zucchini, and red onion into uniform half-inch pieces.
Toss the diced vegetables on the baking sheet with the olive oil, sea salt, and black pepper until evenly coated.
Roast the vegetables for 15-20 minutes, or until they are tender and slightly caramelized at the edges.
While the vegetables roast, whisk together the whole eggs, liquid egg whites, and nutritional yeast in a medium bowl until well combined.
Heat a non-stick skillet over medium-low heat and add the grass-fed butter, swirling to coat the pan.
Pour the egg mixture into the skillet and let it sit for 30 seconds before gently stirring with a silicone spatula.
Continue to cook the eggs, folding them over slowly, until soft and creamy curds form and they are just set.
Divide the roasted vegetables between plates and top with the scrambled eggs to serve.