Like others have said Im pretty sure that half a chicken breast is one side of the breastbone so that each chicken has one breast. Sometimes you can find the entire breast with the breast bone and ribs intact but they dont come skinless and they are obviously not boneless.
When you cut up a chicken into pieces each piece of meat on either side of the breast bone is referred to a a breast half.
Chicken breast halves. Step by step instructions for butterflying a chicken breast Place one chicken breast half on a cutting board flatsmooth side down. Put the palm of your non-cutting hand on the top of the breast and using a very sharp knife slowly cut horizontally through the breast. A clean and easy way to marinate the chicken is to place it in a large plastic zip top bag add your marinade and make sure your entire chicken breast is covered.
Preheat the grill on high for 10-15 minutes then use your grill brush to scrape any previous remnants off your grates. What I did to try to make sure was check the nutritional data for half a chicken breast against the nutritional data for a normal sized chicken breast and found them to. Most of my cookbooks just call each side a breast so I hadnt actually run into that until I started using SP.
Marinate the fully thawed chicken breasts.