Chicken & Chicken Sausage Jambalaya

my son is cooking for me due to recent injuries, and we made jambalaya with what we had, and ingredients we needed to use up.

2lb boneless skinless chicken thighs
12 oz maple chicken sausage

1 tbs onion powder
1 tbs garlic powder
1 tbs paprika
1 tsp white pepper
1/2 tsp cayenne
2 tbs canola oil

1 medium to large yellow onion
1 green bellpepper
4 celery stalks
3 crushed garlic cloves

2 cups rice
3.25 cups water
2 bullion cubes