Begin by seasoning the chicken breasts with salt and pepper.
In a skillet, heat the olive oil over medium heat.
Add the chicken and cook for about 5 minutes on each side, or until it’s golden brown and fully cooked. Remove and set aside.
In the same skillet, add a tad more oil if needed. Toss in the minced garlic and stir for a minute or until aromatic.
Add the mushrooms. Cook for about 5-7 minutes, or until they release their juices and start to brown.
Pour in the chicken broth. Let it simmer and reduce by half.
Whisk in the cornstarch mixture to thicken the sauce.
Return the cooked chicken to the skillet, coating it well with the sauce.
In another pan, lightly sauté the zucchini noodles for 2-3 minutes, ensuring they remain al dente.
Serve the Chicken Marsala over the bed of Zucchini Noodles. Garnish with fresh parsley.