Step 1

Preheat the grill or oven to 400 degrees F. Lay out 4 large squares of foil.

Step 2

Cut the potatoes into quarters and divide them onto the four pieces of foil. Drizzle each pile of potatoes with 1 teaspoon olive oil and sprinkle with salt and pepper.

Step 3

Lay one chicken breast over each pile of potatoes. Spread 1 tablespoon of pesto over each chicken breast, and sprinkle with salt and pepper. Fold each piece of foil around the potatoes and chicken, sealing on the top and sides.

Step 4

Grill or bake the chicken packets for 30-35 minutes. Meanwhile, slice the mozzarella ball into four rounds, and cut four slices of tomato.

Step 5

Once the chicken is cooked through, carefully open the foil packets and place one slice of mozzarella and one slice of tomato over the top of the chicken. Brush a scant amount of pesto over the top of each tomato. Place the packets, open, over the grill for 5 minutes to let the mozzarella melt.