I would be tempted to roast all the veggies - pound out the chicken very thin, pan saute after floured, salted, peppered, cut in strips or in squares when done. Once the veggies are done, while still hot, toss with the spinach. When the chicken is done toss with everything else. If you have some whole wheat pasta shape toss in there and serve in one big bowl. Drizzle a bit of EVOO and add some kosher salt and pepper.
"Count yourself...you ain't so many" - quote from Buck's Daddy