When the onions and peppers are cooked, transfer to a bowl and cover to keep warm. Mist the skillet again with spray and add the eggs. As they begin to set, use a wooden spoon to scrape from one side of the pan to the other, to "scramble" them. Continue scrambling until no runny egg remains. Then spoon the eggs over the cheese on one half of the tortilla. Sprinkle the onion-pepper mixture over that. When the cheese is melted, fold the bare half over the filled half.