The Seahawks need an OL like crazy after years of Russell Wilson running for his life on every play.  So naturally they took... a running back.
ESPN says "Penny is the fifth-ranked running back on our board, so this is a reach."
Yeah, that's what I want to hear: "this is a reach".  No one ever thinks you're clever for using a first round pick on someone no one was going to take in the first round.  That's what the other rounds are for!  Oh I see that Seattle doesn't have another pick until the fourth round.  Okay, so I guess your precious running back won't be there by then but neither will a decent offensive lineman!  Maybe you could have tried to trade that first one round pick for a second and third?  Hell, what good is a running back if your o-line is ****?  Watching a guy run into a wall of defenders at the line of scrimmage isn't a lot of fun, you know?  And again this is a "reach" so he's not even the best running back they could have picked if they were insisting on a running back.
It's a weird situation where this is the same GM and coach that built a Superbowl winning team so they must know what they're doing, right?  Yet with the repeated o-line problems of the last several seasons and their idiotic attempts to address it (including converting a basketball player to an OL; like why not just grab some bouncers from local bars if you're going to train someone from scratch to play at the top level?) you question it.  Can you win a Superbowl and still be an idiot?