Heat the olive oil in a medium non-stick skillet over medium-high heat.
Add the ground turkey to the skillet along with the dried sage, garlic powder, sea salt, and black pepper.
Cook the turkey, breaking it into small crumbles with a spatula, until it is browned and no longer pink.
Add the diced yellow onion and red bell pepper to the skillet, sautéing for 3-4 minutes until the vegetables are tender.
Add the baby spinach and stir for 1 minute until the leaves are just wilted.
Push the turkey and vegetable mixture to one side of the pan.
In a small bowl, whisk together the whole egg and egg whites, then pour them into the empty side of the pan.
Scramble the eggs until they are just set, then stir to combine with the turkey and vegetable mixture.
Transfer the mixture to a bowl and top with the sliced avocado before serving.