Preheat oven to 400°F and line a baking sheet with heavy-duty foil.
Place chicken breasts between two pieces of saran wrap and pound with a meat mallet or heavy sauté pan until chicken is of an even thickness.
Place chicken and pesto in medium bowl; toss to coat.
Place chicken on a prepared baking sheet.
Bake for 20-25 minutes or until chicken is no longer pink in the center.
Remove from oven; top with tomatoes and almond cheese.
Bake for an additional 3-5 minutes or until cheese is melted.