Bring a pot of salted water to a boil and cook the linguine according to package directions until al dente, reserving a small amount of pasta water before draining.
Season the chicken breast with half of the sea salt and black pepper, then sear in a non-stick skillet over medium heat until cooked through, approximately 5-6 minutes per side.
Remove the chicken from the pan, let it rest for a few minutes, and then slice it into thin strips.
In the same skillet, add the sliced cremini mushrooms and minced shallots, sautéing until the mushrooms are golden brown and tender.
Stir in the minced garlic and cook for 30 seconds until fragrant, then pour in the chicken broth to deglaze the pan.
Simmer the broth for 2 minutes to reduce slightly before adding the cooked linguine and sliced chicken back into the skillet.
Toss the ingredients together over low heat to coat them in the pan juices, adding a splash of reserved pasta water if needed for a silkier consistency.
Remove the skillet from the heat and drizzle the truffle oil over the pasta, tossing gently to distribute the aroma.
Serve the pasta garnished with grated parmesan cheese, fresh parsley, and the remaining sea salt and black pepper.