Turkey breast is one of our leanest proteins and is an excellent source of iron, zinc, and others. The best part about it, at least according to my husband, is it tastes great! You will not lose any flavor with this substitution.
Speaking of stir-fry this is what I do. Add a little oil to your pan/wok and heat for just a second. Add your chopped meat and cook until meat is completely cooked through. Add veggies (to make it easy on yourself grab a stir-fry bag in the vegetable aisle) and saute until softened, but still have a little bite.
Pour on your favorite, healthy teriyaki sauce (watch for high sugar). Stir. If your sauce is too thin you can always add a little corn starch to thicken and better coat your meat and veggies.
Serve over brown rice. Enjoy!