Combine 3 tablespoons of melted cooking fat, 6 minced garlic cloves, 3 tablespoons of chopped fresh rosemary leaves, and the juice and zest of 1 lemon in a baking dish. Start with 1 teaspoon each of sea salt and freshly ground black pepper and add more salt or pepper to taste. Add the 2 ½ pounds of boneless, skinless chicken breasts cut into 1 ½ inch chunks, and mix well to coat.
2 ½ lbs boneless skinless chicken breasts, 6 cloves garlic, 3 tablespoon fresh rosemary leaves, 3 tablespoon cooking fat, 1 tablespoon lemon zest, Sea salt and freshly ground black pepper