Bring a pot of salted water to a boil and cook the whole wheat penne according to package directions until al dente.
Before draining the pasta, reserve 2 tablespoons of the starchy pasta water and set it aside.
While pasta cooks, season the chicken breast with sea salt and black pepper.
Heat olive oil in a large skillet over medium heat and sauté the chicken until golden brown and cooked through, about 5-6 minutes per side.
Add the minced garlic to the skillet and cook for 1 minute until fragrant, then add the fresh spinach and sauté until just wilted.
In a small bowl, whisk together the Greek yogurt, parmesan cheese, fresh parsley, and fresh basil.
Lower the skillet heat to low and add the cooked pasta and reserved pasta water to the chicken and spinach mixture.
Stir in the Greek yogurt sauce, tossing everything together gently until the sauce is creamy and coats the pasta evenly.
Remove from heat immediately to prevent the yogurt from curdling and serve warm.