Make pasta according to package directions, making sure it’s cooked al dente; drain. Chop rotisserie chicken and basil and set aside. Chop tomatoes and slice mozzarella cheese (or get 2 cups grated cheese ready).
In a baking dish, combine the cooked pasta, tomato sauce, pesto, chopped chicken, and half the basil. Salt and pepper to taste. Heat lightly throughout on low heat.
Turn the oven on to broil. In the same pan add tomatoes and the cheese. Sprinkle with more basil.
Broil on HI for about 1-2 minutes, or until cheese begins to brown and is bubbly.
Serve sprinkled with the remaining chopped basil leaves.