Preheat oven to 400 degrees F (200 degrees C). Spray a 9×13-inch baking dish with cooking spray. Saute chicken in a large pan with about 2 tablespoons of olive oil until white.
Toss the cubed chicken with the salt in a large bowl. Stir together tomatoes, water, garlic, cheese, Italian seasoning, basil and stuffing mix in a large bowl; set aside to soften.. Combine the bread and chicken and mix well. Spread the softened stuffing and chicken mixture evenly in the baking dish.