Avocado Hummus with Crispy Pita Chips

Name: Avocado Hummus with Crispy Pita Chips
Ingredients: 1/3 cup extra-virgin olive oil; 1 teaspoon chili or dried chipotle powder; Zest of 2 large limes, optional; 2 whole wheat or plain pita breads, split in half horizontally; 1/2 teaspoon kosher salt; 1/4 teaspoon freshly ground black pepper; One 15-ounce can cannellini beans, rinsed and drained; 1 large or 2 small avocados, seeded, peeled and coarsely chopped; 1/2 packed cup arugula; 1/3 cup fresh flat-leaf parsley leaves; 2 tablespoons fresh lemon juice; 1 clove garlic, smashed; 1 teaspoon kosher salt, plus extra for seasoning; 1/4 teaspoon freshly ground black pepper, plus extra for seasoning; 2 tablespoons extra-virgin olive oil