Heat olive oil over medium heat. When it is hot, add onion and sauté until just beginning to soften. Add garlic and zucchini. Cook for 2 to 3 minutes, then add chicken strips and taco seasoning.
When chicken is warm and veggies are tender, add salsa, alfredo or cheese sauce, and olives. Heat a few more minutes.
Add pasta to the pan, continue cooking until evenly heated.
To serve, sprinkle with cheese and fresh cilantro, and garnish with a small dollop of sour cream.