Preheat your oven to 400°F and line a baking sheet with parchment paper for easy cleanup.
Chop the broccoli florets, red bell pepper, and red onion into uniform, bite-sized pieces.
Place the vegetables on the prepared baking sheet and toss thoroughly with the avocado oil, garlic powder, and half of the sea salt.
Roast the vegetables in the oven for 15 to 20 minutes, or until they are tender and the edges have begun to slightly caramelize.
While the vegetables roast, combine the eggs, egg whites, Greek yogurt, remaining sea salt, and black pepper in a bowl and whisk vigorously until the mixture is completely smooth.
Place a non-stick skillet over medium-low heat and add the ghee, swirling to coat the bottom of the pan.
Pour the egg mixture into the skillet and let it sit for 30 seconds before using a silicone spatula to gently push the eggs toward the center.
Continue cooking slowly, folding the eggs over themselves until they are just set and have a creamy texture.
Remove the skillet from the heat and gently fold the warm roasted vegetables into the scrambled eggs before serving.