EVERYONE loves steak
just buy a pack of angus steaks (sams club for like 14$) a little salt and pepper, stick them in the oven on 350 for 20 minutes.. flip.. keep them there for another 15 and you got yourself a medium-well steak.. keep them a little longer for well done, or a little shorter for medium-rare
get a few corn on the cobs (1 per person.. ) and boil them with some salt until they turn bright yellow (of course peel them!) OR if you want the easy way out, buy canned corn (not canned creamed corn!) and you can heat that up with a little bit of the steak grease ..
buy a loaf of italian bread (1-2$) and cut it into 1" slices and that will work too!
and make a basic lettuce-tomatoes-onions salad with a premade salad dressing! just cut up all the ingredients to about 1" pieces.
and you got yourself a meal! (i would also pre-buy the dessert! you have enough things to worry about, so make something SIMPLE and universally loved..)
if steak isn't an option.. maybe salmon, or meatloaf.. or pasta..
do your parents like sushi? i wouldn't serve something that may not please everyone.. the last thing you want would be a sourpuss on the table.. or someone getting food poisoning.. if you've never made sushi before DO NOT attempt it now.. not unless this dinner is a month or so away..