Heat the avocado oil in a medium non-stick skillet over medium heat.
Add the sliced mushrooms and diced red bell pepper to the pan, sautéing for 3-4 minutes until the vegetables are tender.
In a medium bowl, whisk together the whole egg, liquid egg whites, sea salt, and black pepper until well combined.
Stir the baby spinach into the skillet and cook for 1 minute until just wilted.
Reduce the heat to medium-low and pour the egg mixture into the skillet.
Allow the eggs to set slightly, then gently fold in the cottage cheese.
Continue to cook, stirring occasionally, until the eggs are fully set but still maintain a creamy, soft texture.
Remove from heat, garnish with fresh chopped chives, and serve immediately.