One Pot Cajun Chicken Pasta

Name: One Pot Cajun Chicken Pasta
Prep time: 20 min
Cook time: 20 min
Total time: 40 min
Cuisine: American
Ingredients: 1 1/2 Tbsp olive oil, (divided); 1 lb boneless skinless chicken breasts, (cut into 1-inch pieces); 1 1/2 Tbsp cajun seasoning, (recipe HERE); 1 medium red bell pepper, (sliced into strips, about 2-inches long); 1 medium yellow bell pepper, (sliced into strips, about 2-inches long ); 1 small (5 - 6 oz) red onion, (halved and thinly sliced); 2 garlic cloves, (minced (2 tsp)); 2 (14.5 oz) cans low-sodium chicken broth; 1 (14.5 oz) can fire roasted diced tomatoes; 3/4 cup heavy cream, (divided); 12 oz. penne pasta ((recommend Barilla for consistency)); 2 tsp cornstarch, (mixed with 1 Tbsp water); 3/4 cup finely shredded parmesan cheese; 3 Tbsp minced fresh parsley; Salt and freshly ground black pepper, (to taste)