Preheat oven to 350 degrees. Cook pasta per instruction on box, then set aside. Cut vegetables and place in roasting pan with olive oil, salt and pepper, then toss to coat. Roast for 20-25 minutes.
Add mussels to saute pan with 2 tbsp of olive oil, cover with lid or another pan and allow to steam open, about 8 minutes. Let mussels cool then remove from shells and place in a bowl, saving the juices in the pan.