Preheat your oven to 400°F. Peel and cube the sweet potato into bite-sized pieces.
Toss the sweet potato cubes with half of the avocado oil and a pinch of sea salt on a baking sheet.
Roast the sweet potatoes for 20-25 minutes, flipping halfway through, until they are tender and slightly caramelized.
While the potatoes roast, whisk the whole egg and egg whites together in a small bowl until well combined.
Heat the remaining avocado oil in a non-stick skillet over medium heat. Add the diced bell pepper and sauté for 3-4 minutes until softened.
Add the black beans and spinach to the skillet, stirring until the spinach has completely wilted.
Pour the egg mixture into the skillet and season with the remaining sea salt and black pepper.
Gently scramble the eggs with the vegetables and beans using a spatula until the eggs are just set and fluffy.
Plate the scramble alongside the roasted sweet potato and top with freshly sliced avocado.
Serve the mixed berries and walnuts in a separate bowl as a nutrient-dense side to complete the meal.