In cast iron Dutch oven, heat oil on medium-high. Add sausage, onion, bell pepper, celery, garlic, ground pepper, cayenne, and Cajun seasoning. Cook until vegetables are soft, stirring frequently.
Add rice, stock, liquid smoke, and tomatoes. Bring to boil, then lower heat. Add salt for taste. Stir (occasionally uncovered) for 15 minutes until about half of liquid has been absorbed. Mix in chicken meat. Cover and cook another 10 minutes. Turn off heat and let sit for 10 minutes (covered).
Fold in chopped parsley and green onions. It should be juicy, but not soupy (add more stock if necessary).
Individually top each TOSTITOS® chip with 2 tbsp. of warm Jambalaya.
Top with 1 tbsp. of cheese (50/50 mix of pepper jack and smoked cheddar) and place in 400º oven for 5 minutes (until cheese is well melted).