Ok maybe it's not an Italian recipe, you can called it "fusion" but I use to cook with ingredients I discover during my travels.
I've been in Japan during my honeymoon and I loved it so much.
I've tried this recipe in a small food stand in the old part of the Kyoto's station, I loved it, my husband loved it and once at home we would like to eat it once again: it's not the very same of the japanese one but it's ok, tasty and quick to prepare.
It' really really easy: chop chicken breast in small pieces, put it in a bowl with teriyaki sauce, mix well and let it rest in fridge for about 2 hours.
Then prepare a pan, add extravirgin olive oil, leeks cutted round ( don't add the green part of course), salt and chicken with the sauce.
Stirfry untill leeks are tender and chicken is well cooked, if it dries add a little more teriyaki sauce and a sprinkle of sesame seeds on top.
You can serve it with white rice, it's perfect!