Combine pasta, zucchini, tomatoes, onion, garlic, italian spices, olive oil,1 teaspoon salt, 1/2 teaspoon garlic powder, and water in a large straight-sided skillet. Bring to a boil over high heat (leave spinach until the end).
Boil mixture, stirring and turning pasta frequently with tongs, until pasta is al dente and water has nearly evaporated, about 8 minutes. Add spinach, stir and turn off heat.
Top with freshly grated parmesan cheese and olive oil, serve hot.