Heat the avocado oil in a large cast-iron skillet over medium heat.
Add the cubed sweet potatoes to the skillet and sauté for 8-10 minutes, stirring occasionally until they are tender and slightly caramelized.
Add the ground turkey sausage to the pan, breaking it into small crumbles with a wooden spoon, and cook until browned and cooked through.
Stir in the diced red bell pepper and yellow onion, cooking for another 3-4 minutes until the vegetables have softened.
In a small bowl, whisk together the whole egg, egg whites, sea salt, black pepper, and smoked paprika.
Push the potato and meat mixture to the outer edges of the skillet and pour the egg mixture into the center.
Gently scramble the eggs until they are just set, then toss everything together in the pan.
Add the baby spinach and stir for 1 minute until the leaves are just wilted.
Remove from heat and serve immediately topped with fresh avocado slices.