Oli Udoh got 1st team snaps at Right Tackle; Allen: “LG & RT are still open. Penning is progressing but Udoh will get a look at RT.”

This isn't a bad thing. Oduh can hold it down while Penning continues to develop on the right side and gets used to the new system. People like to pile on with him, but he had no offseason before his rookie year and no offseason before his 2nd year with injuries between both. This was the first offseason where he got a chance to develop and he still needs work in parts of his game. He's still young and lineman can play into their 30s so he has time on his side.
The Saints did not draft Penning as a DE in hopes of trying to convert him to Tackle in the pros.

Our rookie left tackle played right tackle in college and we switched him to the left side and he's hit the ground running.

Penning was terrible last season and his play this off-season still has the coaches concerned, so much so that a 7th round pick from the Vikings who played both T/G for them in a backup role is getting looks at RT because our first round pick has yet to solidify a position that's being handed to him.