Fresh mozzarella is packed in liquid and is very mild and sweet tasting. Look for small, fresh, pearl-size mozzarella balls called Perline, but if unavailable, use any size fresh mozzarella and cut into 1/2-inch pieces.
Add 1/2 cup chopped fresh basil leaves to the salad, if desired, rather than just sprinkling some on top.
Leftover grilled chicken would be a great substitute for the purchased grilled chicken. Do a planned leftover and throw on an extra chicken breast next time you’re grilling. Slice it and freeze.