Bring a pot of salted water to a boil and cook the chickpea pasta according to package directions until al dente.
While pasta cooks, heat olive oil in a large skillet over medium-high heat.
Season the diced chicken breast with sea salt, black pepper, and onion powder, then sauté until golden and cooked through.
Stir in the minced garlic and cook for 30 seconds until fragrant, then reduce heat to low.
Reserve 0.25 cup of pasta water, then drain the pasta.
Whisk together the Greek yogurt, parmesan cheese, and reserved pasta water in a small bowl until smooth.
Toss the cooked pasta, chicken, and baby spinach into the skillet with the sauce, stirring until the spinach is wilted and the sauce is creamy.