Bring a pot of salted water to a boil and cook the whole wheat pasta according to package directions until al dente.
Season the chicken breast with half of the sea salt, black pepper, and dried oregano.
Heat a large skillet over medium-high heat and sear the chicken until golden brown and cooked through, then slice into thin strips.
In the same skillet, lower the heat to medium and melt the ghee, then sauté the minced garlic until fragrant and lightly golden.
Add the baby spinach to the skillet and stir constantly until the leaves are just wilted.
Toss the cooked pasta and sliced chicken back into the skillet with the garlic butter and spinach.
Add the remaining sea salt, black pepper, and dried oregano, then stir in the fresh parsley to combine.
Serve the pasta immediately in a warm bowl, topped with the shaved parmesan for a savory finish.