In a medium bowl, whisk together the liquid egg whites and the whole egg until the mixture is frothy and well combined.
Heat the ghee in a large non-stick skillet over medium heat until melted and shimmering.
Add the cherry tomatoes to the skillet and sauté for 2 minutes until the skins begin to blister and soften.
Toss in the baby spinach and cook for about 1 minute, just until the leaves are wilted.
Pour the egg mixture into the skillet over the vegetables, allowing it to sit undisturbed for 15 seconds to begin setting.
Using a silicone spatula, gently push the eggs from the edges toward the center, creating large, soft curds.
Sprinkle in the fresh chives, parsley, sea salt, and black pepper while the eggs are still slightly wet.
Continue to fold the eggs gently until they are just set and fluffy, then remove from heat immediately to prevent overcooking.
Toast the sprouted grain bread until golden and crisp.
Serve the herb scramble alongside the toast and top with the sliced avocado.