Bring a pot of salted water to a boil and cook the chickpea pasta according to package directions until al dente.
While the pasta cooks, heat the olive oil in a large skillet over medium-high heat.
Season the diced chicken with sea salt and black pepper, then sauté in the skillet until golden and cooked through.
Add the sliced mushrooms and minced garlic to the skillet, cooking until the mushrooms are tender and fragrant.
Reserve a small amount of pasta water, then drain the pasta and add it to the skillet with the baby spinach.
Toss the mixture together until the spinach is wilted, adding a splash of pasta water if needed for a smooth consistency.
Remove the skillet from the heat and drizzle with truffle oil, tossing gently to incorporate the aroma.
Serve the pasta immediately, garnished with the grated parmesan cheese.