Spiralize the zucchini into noodles, set aside.
In a skillet, melt butter over medium heat and sauté garlic until fragrant.
Add heavy cream, garlic powder, salt, and pepper. Stir until well combined.
Bring the mixture to a simmer and cook for 2–3 minutes, stirring occasionally.
Stir in Parmesan cheese, and cook until the sauce thickens.
Add the chicken slices to the skillet, heating through.
Toss in the zoodles, mixing gently until well coated.
Cook for another 3-4 minutes until the zoodles are tender.
Serve warm, garnished with parsley if desired.