Heat 2 teaspoons of oil in a large pan over medium high heat. Add the onions and cook for 4 minutes or until just softened.
Add the zucchini, mushrooms and green bell pepper to the pan. Cook for 5 minutes or until vegetables are tender. Season with salt and pepper to taste.
Remove the vegetable mixture from the pan; wipe the pan clean with a paper towel.
Add the remaining 3 teaspoons of oil to the pan. Add the chicken in a single layer and season with salt and pepper to taste. You may need to work in batches if the chicken doesn't all fit.
Cook for 3-4 minutes per side or until chicken is golden brown and cooked through.
Add the garlic and ginger and cook for 30 seconds. Add the vegetable mixture back to the pan with the chicken.
Whisk together all the sauce ingredients until well combined.
Pour the sauce mixture over the chicken and vegetables. Bring to a simmer. Cook for 1-2 minutes or until sauce is just thickened. Stir in the almonds, then serve.
