In a small bowl, combine the diced mango, finely diced red onion, chopped cilantro, and lime juice to prepare the fresh salsa.
Peel the ripe plantain and cut it into small, uniform cubes.
Heat the avocado oil in a large non-stick skillet over medium heat.
Add the ground chicken sausage and diced plantains to the skillet, breaking up the meat with a spatula.
Cook for 6-8 minutes, stirring occasionally, until the sausage is thoroughly browned and the plantains are caramelized and soft.
In a separate bowl, whisk the eggs with sea salt and black pepper until well combined.
Lower the heat to medium-low and pour the eggs into the skillet with the sausage and plantains.
Gently fold the mixture until the eggs are just set and reach a fluffy consistency.
Transfer the scramble to a plate and top with the prepared mango salsa before serving.