Roast Chicken with Potatoes and Onions

we had this for dinner on wednesday night. i really liked it. it's nice to have a different way to do roast chicken than what i normally do. the mixture that you rub on the outside of this chicken makes really flavorful pan drippings. you can degrease and reduce the drippings into a sauce or if you're lazy like i was, just spoon the drippings over your chicken and potatoes and onions. i served this with sauted asparagus. here's the recipe...

...recipe from Bistro Cooking at Home
olive oil
dijon mustard
salt and pepper
thyme
rosemary
lemon juice

1 small roasting chicken
1 large red onion, cut into thick slices
4 red potatoes, cut in half or in quarters

mix the first six ingredients together and and smear all over the chicken. toss the potatoes and onions in a little olive oil and season with salt and pepper. place the chicken in a roasting pan and suround with the potatoes and onions. cook for about 1 1/2 hours at 375 F.