Slice the andouille sausage into half-moon rounds.
Heat the avocado oil in a large non-stick skillet over medium-high heat.
Add the sliced sausage, diced red bell pepper, and diced yellow onion to the skillet.
Sauté for 5-6 minutes, stirring occasionally, until the sausage is browned and the vegetables are tender.
While the sausage cooks, whisk together the whole eggs, liquid egg whites, sea salt, and black pepper in a medium bowl until well combined.
Add the fresh baby spinach to the skillet and stir for 1 minute until just wilted.
Reduce the heat to medium-low and pour the egg mixture over the sausage and vegetables.
Using a silicone spatula, gently push the eggs from the edges toward the center, folding them until they are just set and remain light and fluffy.
Remove from heat immediately to prevent overcooking.
Garnish with chopped fresh chives and serve hot.