Make alfredo sauce by placing all of the sauce ingredients in a high powered blender. Blend until smooth and creamy and set aside.
Heat a large skillet over medium heat and add avocado oil and chicken to pan. Season with half the Italian seasoning, salt and pepper. Sear for 5-6 minutes undisturbed so a brown crust starts to form. Flip and season with the rest of the Italian seasoning, salt and pepper and cook for another 5-6 minutes, or until the chicken is fully cooked. Remove and set on a cutting board.
While the chicken is cooking, spiralize zucchini and set aside.
In the same pan, turn heat to low, add bone broth and deglaze the pan. Then, add in the alfredo sauce. Stir continuously to heat up. Prep everything to put it all together.
Cut chicken into strips or cubes. Serve with a bed of zucchini noodles (you can heat them up for 3-5 minutes over the stove first or serve as is), sliced chicken and drizzle sauce all over. Top with optional parsley for garnish. Enjoy!