LeBlancs Seasoning is what "the pros" use.
Save that parboiled rice for the next wedding you attend and get you some good Louisiana grown long grain rice and make your jambalaya they way God intended it to be done.
Season your meat before you brown it.
Throw away all your garlic powder, if your going to use a canned garlic use Granulated Garlic, yes there is a difference and granulated is a much better product.
Finally, download the jambalaya calculator for future reference. Here's the link...
http://jambalayacalculator.com/excel-spreadsheet/