Preheat your oven to 400°F and dice the red bell pepper, zucchini, and red onion into small, uniform pieces.
Toss the diced vegetables with half of the avocado oil and a pinch of salt, then roast on a parchment-lined baking sheet for 15 minutes until tender.
Slice the chicken sausage into thin rounds and sear in a non-stick skillet over medium heat until browned and crispy.
In a medium bowl, whisk together the whole eggs and egg whites until well combined and slightly frothy.
Add the remaining avocado oil to the skillet with the sausage, pour in the egg mixture, and add the roasted vegetables.
Gently fold the eggs with a spatula over medium-low heat until they are soft, creamy, and just set.
Season with the remaining sea salt and black pepper, then garnish with fresh chives before serving.