Step 1: In a medium bowl, whisk together the soy sauce, rice vinegar, brown sugar (or honey), grated ginger (if using), and red pepper flakes (if using). Set aside. In a separate small bowl, prepare the cornstarch slurry and set aside.
Step 2: Pat the chicken pieces dry with paper towels. Heat 1 tablespoon of olive oil or sesame oil in a large skillet or wok over medium-high heat. Add the chicken and cook until lightly browned and cooked through, about 5-7 minutes. Remove the chicken from the skillet and set aside.
Step 3: Add the remaining 1 tablespoon of oil to the skillet. Add the minced garlic and sauté for 30 seconds until fragrant, being careful not to burn it. This is where the amazing garlic flavor for your garlic chicken zucchini noodles stir fry really starts!
Step 4: Pour the prepared sauce mixture into the skillet. Bring to a simmer, then stir in the cornstarch slurry. Cook, stirring constantly, until the sauce thickens to your desired consistency, about 1-2 minutes.
Step 5: Return the cooked chicken to the skillet, tossing to coat evenly with the sauce. This helps the chicken absorb all the delicious flavors of the garlic chicken zucchini noodles stir fry.
Step 6: Add the zucchini noodles to the skillet. Toss gently with tongs for 1-2 minutes, just until the zucchini noodles are heated through and slightly tender but still have a bit of a bite. Do not overcook, or they will become watery and mushy. This quick cooking is key for the perfect garlic chicken zucchini noodles stir fry.
Step 7: Remove from heat immediately. Garnish with sesame seeds and chopped green onions. Serve your delightful garlic chicken zucchini noodles stir fry hot and enjoy!