Make the jambalaya rice according to the boxed instructions. Feel free to use an Instant Pot if it is convenient.
Sausage + Pepper Mix
Cut sausage link into small pieces
Saute sausage and bell pepper with some oil on medium heat. Once golden brown remove content into a bowl and use the same pan to make shrimp. (You can use a different pan if you choose to. I just use the same one to save time.)
Shrimp
Saute the shrimp with oil and cajun seasoning. Check your seasoning to see if salt is included.
Assembling the Jambalaya
Place rice on a plate, add sausage and pepper mixture on top, and then shrimp on the peak. Enjoy with additional hot sauce or chopped chili peppers.
You can also mix everything together instead of assembling separately. It is all a personal preference.