Bring a large pot of salted water to a boil and cook the linguine according to package instructions 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, approximately 6 minutes per side.
Remove the chicken from the pan and let it rest before slicing into thin strips.
In the same skillet, add the sliced mushrooms and sauté until they release their moisture and become golden brown.
Add the minced garlic to the mushrooms and cook for 1 minute until fragrant.
Drain the pasta, reserving 2 tablespoons of the starchy cooking water.
Add the cooked linguine, sliced chicken, and reserved pasta water to the skillet with the mushrooms.
Drizzle the white truffle oil over the mixture and toss everything together until well-coated and glossy.
Serve immediately topped with grated parmesan cheese and freshly chopped parsley.