Dice the onion, bell pepper, and celery, mince the garlic, chop the fresh thyme and parsley, and set all aside. Heat 2 tablespoons of olive oil in a large pot over medium-high heat. Slice the Andouille sausage into rounds and cook for about 7 minutes until browned on both sides, then transfer to a bowl and set aside. This browning step builds deep flavor that will carry throughout the dish.
In the same pot with the sausage oil, add the diced onion, bell pepper, and celery, cooking for 5 minutes until softened and fragrant. Add the minced garlic and cook for 1 minute more to bloom the flavors. Stir in the rice and toast it for 3 minutes, stirring occasionally—this step helps the rice absorb liquid more evenly and creates a slightly nutty flavor. I find that toasting the rice first makes a real difference in the final texture and prevents mushy jambalaya.
Add the fresh thyme, salt, black pepper, smoked paprika, cayenne pepper, Louisiana-style hot sauce, and crushed tomatoes to the rice mixture, stirring well to combine all the spices and coat the rice. Pour in the chicken stock and stir once more to distribute everything evenly. Bring to a boil, then reduce heat to low, cover with a lid, and simmer for 15-20 minutes until the rice is tender and the liquid is absorbed. While this simmers unattended, you can prepare the hash browns and eggs components.
While the jambalaya is simmering, heat 2 tablespoons of olive oil in a large skillet over medium-high heat. Add the thawed hash browns that have been patted dry with paper towels to remove excess moisture—this is key for getting them crispy rather than steamed. Cook for 8-10 minutes, stirring occasionally, until golden brown and crispy on the edges. Transfer the cooked hash browns to a plate, leaving the oil in the skillet for the next step.
In the same skillet with the remaining oil from the hash browns, pour in the beaten eggs over medium heat. Let them cook gently without stirring for the first 30 seconds, then scramble them lightly, cooking until they're just set but still slightly creamy, about 2-3 minutes total. I prefer my eggs slightly underdone at this stage since they'll continue to cook a bit when mixed into the hot jambalaya. Transfer the cooked eggs to a separate plate.
Check that the jambalaya rice is tender and the liquid is absorbed—if it looks dry and rice still seems firm, add a splash more stock and continue cooking. Gently fold the cooked sausage from Step 1, the crispy hash browns from Step 4, and the cooked eggs from Step 5 into the jambalaya rice, being careful not to break up the eggs too much. Finish by sprinkling the fresh parsley over the top, give it a gentle stir to combine, and serve immediately while everything is still warm and the textures are at their best.