Preheat your oven to 400°F (200°C) and line a small baking sheet with parchment paper.
Chop the broccoli into bite-sized florets and dice the red bell pepper into small pieces.
Toss the broccoli and peppers on the baking sheet with olive oil, garlic powder, and a pinch of sea salt.
Roast the vegetables for 15 to 18 minutes until the broccoli edges are slightly charred and the peppers are tender.
In a medium bowl, whisk together the whole eggs, liquid egg whites, and black pepper until well combined and slightly frothy.
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 pushing the eggs with a spatula to create soft curds.
When the eggs are nearly set but still moist, fold in the roasted vegetables and the crumbled feta cheese.
Remove from heat immediately and serve while the eggs are fluffy and the cheese is just beginning to soften.