Heat oil in a large pan or wok. If desired, add ginger, garlic, and/or red pepper chili flakes. Saute turkey until brown; drain any liquid off. Add soy sauce, sugar, five-spice powder, sesame oil and water. Toss to coat meat well and cook for a few minutes. Season to taste with salt and pepper. Add zucchini noodles and toss to coat; cook for several minutes until done to your preference.
I like my zucchini noodles just barely cooked; otherwise they get soggy. If you let the hot zucchini noodles and sauce sit for a few minutes, the noodles will soften a little more. This is delicious eaten room temperature too. If you like spicy food, serve with Chinese hot bean sauce or add some red pepper flakes during the cooking process.