Ina large sautéed pan, on medium high heat, add chicken breast and chicken stock (or penne boiling water) to the pan. Stirring occasionally until all sides of the chicken pieces are fully cooked and most of the water evaporated. Approximately 5 to 8 minutes.
Then add slices of sausages and cook for another minute.
Add cooked penne and bell pepper and cook for a further 2 minutes.
Reduce the heat to medium, stir in the Cajun pasta sauce to coat everything completely. Then turn off the heat.
Add cherry tomatoes, and adjust seasoning with salt and pepper if necessary. Sprinkle shredded cheddar cheese, chopped parsley or green onion on top. Serve immediately.