Season the chicken breast with half of the sea salt, black pepper, dried oregano, and dried thyme.
Heat a non-stick skillet over medium heat and cook the chicken for 6-7 minutes per side until the internal temperature reaches 165°F.
Remove the chicken from the pan, let it rest for 2 minutes, and then shred it using two forks.
In the same skillet, melt the ghee and add the minced garlic, sautéing for 30 seconds until fragrant.
Place the sourdough slices in the pan, toasting each side for 2 minutes until golden and crisp.
Remove the bread, then pour the egg whites and baby spinach into the pan, scrambling until the whites are set and spinach is wilted.
Top the golden sourdough slices with the shredded chicken and spinach-egg scramble, finishing with the remaining salt and pepper.