Bring a large pot of salted water to a boil and cook the chickpea pasta according to package directions, reserving 1/4 cup of the pasta water before draining.
While the pasta cooks, dice the chicken breast into bite-sized cubes and season them evenly with sea salt and black pepper.
Heat the olive oil in a large skillet over medium-high heat and sauté the chicken until golden brown and cooked through, about 6-8 minutes.
Add the sliced cremini mushrooms and minced garlic to the skillet, cooking until the mushrooms have released their moisture and turned tender.
Reduce the heat to low and add the cooked pasta to the skillet along with the reserved pasta water and parmesan cheese.
Toss everything together continuously until the cheese melts and forms a light, glossy sauce that coats the pasta.
Remove the skillet from the heat, drizzle with the truffle oil, and garnish with freshly chopped parsley before serving.