Bring a pot of salted water to a boil and cook the chickpea pasta according to package directions, reserving 2 tablespoons of the starchy cooking water before draining.
Season the chicken breast with half of the sea salt and black pepper, then sauté in a non-stick pan over medium-high heat until golden and cooked through.
Remove the chicken and in the same pan, sauté the sliced mushrooms and diced shallots until the mushrooms are tender and browned.
Add the minced garlic to the pan and cook for 30 seconds until fragrant, then return the cooked chicken to the pan.
In a small bowl, whisk together the Greek yogurt, truffle oil, and reserved pasta water to create a smooth, creamy base.
Lower the heat to low, toss the pasta into the pan with the chicken and mushrooms, and stir in the yogurt mixture until everything is evenly coated.
Garnish with fresh parsley and the remaining sea salt and pepper before serving immediately.