Can a convicted felon get a Practical Nurse license in Louisianna?

The best thing to do is go directly to the licensing board for Louisianna and get pre-approved. They are the only ones who can tell you for sure. Even if you have things against you there is an appeal process.

I suggest getting a letter of pre-approval BEFORE doing any schoolwork for the license.
On a side-note, I have seen many things being approved in my state. Although getting a license does not mean it will be easy to get a job. It depends on the offense, how long ago it was, and where you want to work. Make sure you have changed your ways for the better and be ready to explain why you would be a good candidate for the job.
Good Luck.