Dice the Russet potato into small, uniform half-inch cubes to ensure even cooking and a consistent texture.
Place the bacon slices in a large non-stick skillet over medium heat and cook until the fat has rendered and the bacon is crispy.
Remove the bacon from the pan, drain on a paper towel, and crumble into bits, leaving about one teaspoon of the rendered fat in the skillet.
Add the potato cubes to the skillet and sauté for 8-10 minutes, stirring occasionally, until they are golden brown and fork-tender.
Toss in the diced onion and red bell pepper, cooking for an additional 3-4 minutes until the vegetables are softened and fragrant.
In a small bowl, whisk together the eggs, liquid egg whites, sea salt, black pepper, and garlic powder until the mixture is well combined.
Pour the egg mixture into the skillet over the vegetables and cook, stirring gently with a spatula, until the eggs are fluffy and fully set.
Fold in the fresh baby spinach and the reserved crispy bacon bits, allowing the residual heat from the pan to wilt the greens before serving.