Bring a large pot of salted water to a boil and cook the chickpea linguine according to package directions until al dente.
While the pasta cooks, season the chicken breast with half of the sea salt and black pepper.
Heat the olive oil in a large skillet over medium-high heat and sear the chicken until golden and cooked through, then remove and slice into thin strips.
In the same skillet, add the sliced mushrooms and minced shallots, sautéing until the mushrooms are browned and tender.
Add the minced garlic to the skillet and cook for 30 seconds until fragrant, being careful not to burn it.
Reserve 2 tablespoons of the pasta cooking water, then drain the linguine.
Toss the cooked linguine, sliced chicken, and reserved pasta water into the skillet with the mushroom mixture.
Drizzle the truffle oil over the pasta and toss gently to coat all ingredients evenly.
Season the dish with the remaining sea salt and black pepper to enhance the earthy flavors.
Serve immediately topped with a dusting of grated parmesan cheese and fresh chopped parsley.