Marion was wide open cutting to the left with only one defender 5 yards off. If Jake would have hit him I bet he would have got the first down. Instead Jake threw it to Roberts down the middle who had two defenders right on him.
Also, Jake rushed the throw because Etienne got blown up and the rush was right there. Had Jake had 1/2 a second more, he likely hits Marion or even Lassiter at the goal line.
Too bad.