Cut your breasts in 1/2 and pound them thinly (If you don't want to it's ok you don't have to but it makes it easier to roll them up).
Lay your chicken out and season with salt and pepper.
Next, cover them with pesto.
Lay one tomato in the center of your chicken.
Roll up your chicken breasts. I use a toothpick to hold them together.
Lay them in your 9x13 pan.
Cover with Cheese and grape tomatoes.
Bake at 350 for 40-50 minutes