Preheat oven to 450 degrees. Combine pecans, fresh bread crumbs and minced rosemary in a large bowl. In a separate bowl, combine the honey and dijon mustard. Arrange the lamb racks meat side up in a single layer on sheet pans that have been sprayed. Season lamb with salt and pepper. Brush each rack with 1 tablespoon of the honey-dijon mixture. Press 2/3 cup breadcrumb mixture onto each rack. (Lamb can be prepared this far up to one day in advance.) Drip each lamb rack with 1 tablespoon honey. Roast until meat thermometer registers 125 degrees. Racks must rest for at least 10 minutes before carving. Cut between each rib bone to order to separate into chops.