Load the slow cooker: Place the cubed chicken, sausage, diced tomatoes, onion, celery, bell pepper, chicken broth, tomato paste, thyme, oregano, Cajun seasoning, and cayenne pepper into the slow cooker. Stir everything together.
Cook low and slow: Cover and cook on low for 7–8 hours or high for 3–4 hours, until the chicken is tender and the flavors are well blended.
Add rice: One hour before the end of the cooking time, stir in the uncooked rice.
Add shrimp: During the last 15 minutes, add the raw shrimp. Cook until the shrimp turn pink and are fully cooked through.
Serve: Ladle into bowls and enjoy warm — a hearty one-pot Cajun classic!
