Start by heating a large, deep skillet or Dutch oven over medium-high heat. Add the olive oil and let it shimmer.
Add the sliced chicken sausage and cook until browned on the edges, about 4 minutes. Remove the sausage and set it aside; you’ll add it back in later for extra flavor.
In the same pot, add the onion, bell pepper, and celery. Sauté until the vegetables are softened and the onion becomes translucent, about 5 minutes.
Stir in the garlic and cook for another 30 seconds, just until fragrant. This is where the kitchen starts to smell wonderfully inviting.
Pour in the diced tomatoes with their juice and the chicken stock. Bring the mixture to a gentle simmer.
Stir in the rice, Cajun seasoning, and smoked paprika. Return the browned sausage to the pot. Taste and adjust seasoning with salt and pepper as needed.
Cover and reduce the heat to a low simmer. Cook for about 12-15 minutes, or until the rice is nearly tender and most of the liquid is absorbed.
Add the shrimp on top, nestling them into the surface. Cover again and cook for 3-5 minutes, until the shrimp are opaque and cooked through.
Turn off the heat and let the jambalaya rest, covered, for 5 minutes. This helps the flavors meld and the rice finish absorbing any remaining liquid.
Gently fluff the jambalaya with a fork, sprinkle with chopped parsley or green onions, and serve with a dash of hot sauce if you like extra kick.