Remove veggies from skillet, place into large bowl and put in the fridge until they are chilled. (usually around 20 minutes) Once they are chilled toss cooked pasta with veggie mixture, and add the olives. Next add the lemon juice, oregano and more salt, pepper and basil if desired. Add another splash of olive oil and toss till well mixed.
Serve on top of spinach and top off with a few chopped scallions.