Preheat your oven to 400°F and line a large rimmed baking sheet with parchment paper.
Peel the sweet potato and dice it into uniform 1/2-inch cubes to ensure even roasting.
Place the sweet potato cubes on the baking sheet and toss with 1 tsp of avocado oil, sea salt, black pepper, and garlic powder.
Spread the potatoes in a single layer and roast for 20-25 minutes, flipping halfway through, until they are tender and the edges are golden brown.
While the potatoes roast, crack the whole eggs into a medium bowl, add the liquid egg whites, and whisk vigorously until the mixture is uniform and slightly frothy.
Heat the remaining 1 tsp of avocado oil in a non-stick skillet over medium heat.
Add the baby spinach to the skillet and sauté for 1-2 minutes until it is just wilted.
Pour the egg mixture into the skillet with the spinach and let it sit for 30 seconds to set slightly.
Using a silicone spatula, gently push the eggs from the edges toward the center, creating soft curds, until they are fully cooked but still moist.
Divide the roasted sweet potatoes between two plates and top with the high-protein egg scramble.