seriously? a bag of chips? lol.. nothing else to shoot huh? I've been there... but next time, pass on taking a shot of "just anything". It will bring down your average.
My first suggestion would be to choose a different background... a solid color might have been less distracting. Also, this image's composition isn't very exciting. Perhaps an unusual, different point of view would also help. And just as an idea, you might try adding some other things to this image - for example you could try putting a jar of salsa and a bowl on the side, and almost create a "still life" of sorts. Interesting idea though, keep trying! ;)
Subject is fine and in focus, but I see a few things that might improve this. One is to soften the flash or bounce it so you don't get the harsh reflections on the bag. Another would be to brush away those distracting crumbs on the right from the last bag of chips someone ate. And finally the bag is not positioned so that the red and black in the background enhance it. The easiest thing would be to shoot against a solid black background but you could try to get some sort of pattern in the background that complemented the bag.