Preheat your oven to 400°F (200°C) and line a baking sheet with parchment paper.
Dice the bell peppers and zucchini into small, uniform cubes and place them on the baking sheet.
Drizzle the vegetables with olive oil and season with a pinch of sea salt and black pepper, tossing to coat evenly.
Roast the vegetables for 15-18 minutes until they are tender and have developed a light golden char.
While the vegetables roast, whisk the whole eggs, egg whites, Greek yogurt, and nutritional yeast in a medium bowl until the mixture is completely smooth and frothy.
Heat a non-stick skillet over medium-low heat. Once warm, pour the egg mixture into the pan.
Allow the eggs to sit for 30 seconds, then use a silicone spatula to gently push the eggs from the edges toward the center, creating soft, pillowy curds.
Continue cooking until the eggs are just set but still look slightly moist to ensure they stay tender.
Divide the roasted vegetables onto plates, top with the scrambled eggs, and garnish with freshly chopped chives before serving.