Preheat your oven to 400°F and line a small baking sheet with parchment paper.
Dice the red bell pepper and zucchini into small, uniform cubes, then toss them on the baking sheet with the olive oil and a pinch of sea salt.
Roast the vegetables for 15 to 18 minutes until they are tender and show slight caramelization on the edges.
While the vegetables roast, whisk together the whole eggs, egg whites, Greek yogurt, sea salt, black pepper, and garlic powder in a medium bowl until the mixture is completely smooth and uniform.
Heat a high-quality 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 outer edges toward the center, creating soft, creamy folds.
Continue cooking slowly, stirring occasionally, until the eggs are mostly set but still look slightly moist.
Remove the skillet from the heat, fold in the roasted vegetables and chopped chives, and serve immediately while hot.