Zucchini Hummus   1 (15-oz) can chickpeas, drained and rinsed  1 cup coarsely chopped zucchini  1 garlic clove, chopped  1/4 cup chopped fresh parsley  1/4 cup chopped fresh basil  1/2 teaspoon salt  1/4 teaspoon ground black pepper  1/4 cup extra-virgin olive oil  1 teaspoon fresh lemon juice