Fresh Herb Roasted Chicken

I saw this being made on an HGTV show. All the fresh herbs and the lemon looked like such a good combination, I had to give it a go. There was no specific recipe so I guessed on amounts. The flavor was AMAZING. The most fragrant chicken I ever ate. The only disappointment...a little dry...so I won't tell you what temp or how long to roast, but totally worth following this prep if you know better cooking times. Can anyone make suggestions for that-Lyns, I know you make whole chickens now and again?

Fresh Herb Roasted Chicken with Vegetables

Zest of 1 lemon, lemon quartered
2 large cloves garlic, minced
Fresh sage
Fresh rosemary
Fresh thyme
Olive oil
Whole chicken
Salt
Pepper
Carrots, sliced in half and chopped to 2 inch chunks
Potatoes- red and gold, sliced in half

Process the lemon zest, garlic, sage, rosemary, and thyme in a mini food processor. Then add enough olive oil until a thick paste is reached. Spread underneath the skin of the chicken. Fill the cavity with quartered lemon and extra herbs. Place potatoes, sliced side down in pan and throw carrots in over top. Place a rack over pan for chicken, then roast. The chicken drippings give the potatoes and carrots underneath a great flavor.