Bring a pot of salted water to a boil and cook the chickpea pasta according to package directions, reserving two tablespoons of pasta water before draining.
Heat the olive oil in a large skillet over medium-high heat and add the cubed chicken breast, seasoning with sea salt and black pepper.
Cook the chicken for 5-6 minutes until golden brown and cooked through, then remove from the skillet and set aside.
In the same skillet, add the sliced cremini mushrooms and sauté until they release their moisture and become deeply browned.
Add the minced garlic to the mushrooms and cook for 1 minute until fragrant.
In a small bowl, whisk together the Greek yogurt, truffle oil, and the reserved pasta water until smooth.
Return the chicken to the skillet, add the cooked pasta, and pour the yogurt-truffle mixture over the top.
Toss everything together over low heat for 1 minute until the sauce is creamy and coats the pasta evenly.
Garnish with fresh parsley and serve immediately.