Set aside chow mein noodles and 1 Tbsp of parmesan cheese.
Sautee zucchini and squash until tender and slightly browned-up (zukes and squash will render down so don't worry if the pile seems to get smaller during cooking process); Add tomatoes and continue to sautee together until skins on tomatoes begin to wrinkle a bit.
Mix in cilantro, bbq seasoning, garlic and onion powder, soy sauce, salt, and black pepper until well blended.
Put vegetable mixture in to large salad bowl; mix in chow mein noodles until everything is well-coated.
Sprinkle remaining parmesan cheese over dish when ready to serve.