Hawaiian Huli Huli Chicken

Sauce:
    2     tablespoons ketchup
    2     tablespoons light soy sauce
    2     tablespoons honey
    2     teaspoons orange juice
    1     teaspoon garlic (about 1 clove), minced
    1     teaspoon ginger, minced

    12     ounces boneless, skinless chicken breast (about 2 large breasts), cut into 1- inch cubes (about 24 cubes)
    1     cup fresh pineapple, diced (about 24 pieces)
    8     wooden skewers (6 inches each), soaked in water

    To make sauce: Combine ketchup, soy sauce, honey, orange juice, garlic and ginger; mix well. Separate into two bowls and set aside.
    Preheat grill to medium-high heat. Preheat oven to 350 F.
    Alternately thread three chicken cubes and three pineapple chunks on each skewer.
    Grill skewers 3-5 minutes on each side. Brush or spoon sauce from one bowl onto chicken and pineapple every other minute. Discard remaining sauce from first bowl.
    To prevent chicken from drying out, finish cooking to minimum internal temperature of 165 F in oven. Using clean brush or spoon, coat with sauce from remaining bowl before serving.