Boil a pot of salted water and cook the whole wheat pasta according to package directions until al dente.
Steam the broccoli florets until tender-crisp, then set aside.
Season the chicken breast with sea salt and black pepper.
Heat olive oil in a skillet over medium heat and sear the chicken until golden and cooked through, about 5-6 minutes per side.
Remove chicken from the pan, let it rest for 3 minutes, then slice into thin strips.
In the same skillet, reduce heat to low and sauté the minced garlic for 30 seconds until fragrant.
Whisk in the Greek yogurt and grated parmesan cheese, adding a splash of pasta water if needed to reach a smooth consistency.
Toss the cooked pasta, broccoli, and chicken in the creamy sauce until well coated.
Garnish with fresh parsley before serving.