Whisk together garlic, ginger, soy sauce, water, apple cider vinegar, and sugar in a measuring cup until well combined. Set aside.
Gather and prepare all fresh produce: dice onion, carrot, and zucchini; slice chicken breast into thin strips and season with salt and pepper.
Heat a wok or large skillet over high heat. Add oil and stir-fry chopped veggies for about three minutes until crisp yet tender. Remove from heat.
In the same wok, sear seasoned chicken strips over high heat until golden brown, about five minutes. Remove from heat.
Add oil to the wok, crack in eggs, and scramble until broken into small pieces. Add cooked rice and stir-fry for about three minutes.
Pour teriyaki sauce over the rice mixture and stir until evenly coated. Add back sautéed veggies and chicken, tossing together over high heat for a minute before serving.