Healthy Turkey Chili

• 2 teaspoons olive oil
• 1 yellow onion (, chopped)
• 3 garlic cloves (, minced)
• 1 medium red bell pepper (, chopped)
• 1 pound extra lean ground turkey or chicken ((99%))
• 4 tablespoons chili powder
• 2 teaspoons ground cumin
• 1 teaspoon dried oregano
• 1/4 teaspoon cayenne pepper
• 1/2 teaspoon salt (, plus more to taste)
• 1 (28-ounce) can diced tomatoes
• 1 1/4 cups chicken broth
• 2 (15 oz) cans dark red kidney beans, rinsed and drained
• 1 (15 oz) can sweet corn, rinsed and drained

For topping: cheese, avocado, tortilla chips, cilantro, sour cream