Chicken Fajita Soup

Name: Chicken Fajita Soup
Ingredients: 2 tablespoons canola oil; 1 pound boneless, skinless chicken breast, trimmed and cut into bite-size pieces; 1 large onion, halved and sliced (1 1/2 cups); 1 medium red bell pepper, halved and sliced (1 1/2 cups); 1 large jalapeño pepper, halved, seeded, if desired, and sliced; 1 tablespoon chili powder; 1 teaspoon ground cumin; ¾ teaspoon salt; ½ teaspoon garlic powder; 4 cups low-sodium chicken broth; 4 corn tortillas, diced; 2 tablespoons lime juice