Cook noodles and drain.
Heat a skillet or wok and add 1 T. oil.
Throw in the chicken (salt/pepper if desired) to brown and then remove to a plate and slice.
Heat the other T. of oil and add the onions.
Add the peppers, broccoli, scallions and garlic and cook a few minutes to soften everything.
Add the pasta to the pot.
Pour on the sauce and let it cook, tossing with tongs to coat everything.
The sauce will thicken.
At this point, slowly add water to thin the sauce a bit, as needed.
Top with chives.