Peel the sweet plantain and dice it into half-inch cubes.
Finely dice the red onion and red bell pepper.
Heat the avocado oil in a large non-stick skillet over medium heat.
Add the diced plantains to the skillet and sauté for 5-6 minutes until they are golden brown and caramelized on the edges.
Stir in the onions and bell peppers, cooking for another 3-4 minutes until the vegetables are tender-crisp.
In a medium bowl, whisk together the whole eggs, liquid egg whites, sea salt, black pepper, and garlic powder until well combined.
Lower the heat to medium-low and pour the egg mixture into the skillet over the plantains and vegetables.
Use a spatula to gently scramble the eggs, moving them constantly to create soft curds.
When the eggs are nearly set, fold in the fresh baby spinach and continue to cook until the spinach is just wilted.
Remove from heat immediately and serve warm.