In a blender, combine pine nuts, garlic, oregano, lemon juice, ½ cup olive oil, Parmesan cheese, avocado, salt, and pepper and blend until pureed. Set aside.
In a medium to large skillet, heat the remaining olive oil over medium-high heat, add the zucchini, and sauté until tender, about 3 minutes.
Serve the zucchini topped with the pesto.
