Chipotle Veggie Stew

Name: Chipotle Veggie Stew
Ingredients: 1 summer squash, sliced into 1/2-inch-thick rounds; 2 tablespoons lime juice, or to taste; 2 cloves garlic, minced; 1 tablespoon chili powder; 3 medium carrots, sliced; 1 teaspoon sea salt; 4 cups vegetable broth; 1 teaspoon dried oregano; Corn tortilla chips (optional for garnish); 2 stalks celery, sliced; 2 cobs fresh corn, sliced into 2-inch-long pieces; 1/2 cup chopped fresh cilantro; 1 cup fresh green beans, ends snipped; 1 large bell pepper (any color), slivered; 2 tablespoons canola or olive oil; Sea salt and ground black pepper, to taste; Lime wedges (optional for garnish); 1 zucchini, sliced into 1/2-inch-thick rounds; 3 cups (cooked) garbanzo beans; 2 chipotle peppers in adobo sauce, minced; 2 cups water; 4 large ripe tomatoes, chopped; 1/2 teaspoon ground black pepper; 2 large onions, sliced