Lemony Chicken and Veggies Stir-Fry

Quick, packed with lots of veggies, and delicious!  This is great for a busy night. I also love all the fresh veggies, even now that the weather has turned and it's pretty cold.  There's also a little kick to dish awesome stir-fry, which make me very happy. :)  Enjoy!
-1 lemon
-3 Tbs soy sauce
-2 Tbs extra virgin olive oil
-2 chicken breasts, boneless, skinless, cut into chunks
-salt and pepper
-1 small head napa cabbage, cleaned and cut into chunks
-1 lb asparagus, trimmed and cut into 1 inch pieces
-1 red bell pepper, seeded and thinly sliced
-1 orange bell pepper, seeded and thinly sliced
-1 inch fresh ginger, peeled and grated
-1 tsp red pepper flakes
-1/4 tsp chili powder
-4 green onions, chopped
In a small bowl, combine the juice and zest from the lemon with the soy sauce.  Mix and set aside.
In a wok or large skillet, heat the oil.  Add the chicken chunks and season with salt and pepper.  Cook until chicken is cooked through.  Add the cabbage, asparagus, bell peppers, ginger, pepper flakes and chili powder.  Mix well and cook for about 5 more minutes.
Stir in the lemon-soy mixture, plus the green onions.  Toss and cook for 1 minutes.  Serve on top of rice.  Enjoy!