Cook pasta according to package directions. Drain; reserve hot.
In a pot of boiling water, heat pouch of Alfredo Sauce.
Heat oil in a large sauté pan over medium high heat. Add leeks and red pepper sauté 1-2 minutes. Add squash, zucchini and tomatoes, stir to combine sauté 1-2 minutes. Add spinach, stir until wilted.
Add Alfredo Sauce and pasta; stir to coat. Serve immediately.
Garnish with fresh grated parmesan and chopped parsley.