Preheat your oven to 375°F (190°C) and lightly grease a small oven-safe ramekin or individual skillet with the olive oil.
Place the fresh spinach in a small pan over medium heat with a splash of water and sauté until just wilted, then squeeze out excess moisture and layer it at the bottom of the baking dish.
Finely dice the smoked turkey breast and sprinkle it evenly over the bed of spinach.
In a small bowl, whisk together the egg whites, sea salt, black pepper, and garlic powder, then pour the mixture over the turkey and spinach.
Carefully crack the two whole eggs on top of the egg white mixture, keeping the yolks intact.
Place the dish in the oven and bake for 12-15 minutes, or until the whites are fully set but the yolks remain slightly jammy.
While the eggs are baking, toast the sourdough slices in a toaster or on a dry pan until they are golden-brown and crunchy.
Remove the eggs from the oven and serve immediately alongside the warm sourdough toast for dipping into the yolks.