In a medium bowl, whisk together the whole eggs, liquid egg whites, sea salt, and black pepper until well combined and slightly frothy.
Heat a non-stick skillet over medium-low heat and add the ghee, swirling to coat the bottom of the pan as it melts.
Add the baby spinach to the skillet and sauté for 1 minute until just beginning to wilt.
Pour the egg mixture into the skillet over the spinach.
Let the eggs sit undisturbed for about 30 seconds until the edges start to set.
Using a silicone spatula, gently push the eggs from the edges toward the center, creating large, soft curds.
Continue to cook, stirring occasionally and gently, until the eggs are mostly set but still look slightly moist.
Remove the skillet from the heat immediately to prevent overcooking; the residual heat will finish the process.
Garnish with finely chopped fresh chives and serve warm.