Bring a pot of salted water to a boil and cook the chickpea pasta according to package directions, adding the broccoli florets during the last 3 minutes of cooking.
Reserve 0.25 cup of the pasta cooking water, then drain the pasta and broccoli.
Season the chicken breast with sea salt, black pepper, and onion powder.
Heat olive oil in a large skillet over medium-high heat and cook the chicken until golden brown and cooked through, about 5-6 minutes per side.
Remove chicken from the pan, let it rest for 2 minutes, then slice into thin strips.
In the same skillet, reduce heat to low and sauté the minced garlic for 30 seconds until fragrant.
In a small bowl, whisk together the Greek yogurt, parmesan cheese, and the reserved pasta water until smooth.
Add the cooked pasta, broccoli, and sliced chicken back into the skillet.
Pour the yogurt sauce over the ingredients and toss gently over low heat until the sauce is creamy and coats everything evenly.
Garnish with fresh parsley and serve immediately.