Gluten Free Easy Weeknight Meal

1 1/2 pounds pork tenderloin, cut into 1-inch pieces

2 teaspoons grated peeled fresh ginger

2 garlic cloves, minced

1/2 teaspoon crushed red pepper, divided

1 (20-ounce) can pineapple chunks in juice, undrained

9 tablespoons fat-free, lower-sodium chicken broth, divided {Check for Gluten}

1/4 cup ketchup

1/4 cup sugar

3 tablespoons cider vinegar

3 tablespoons lower-sodium gluten free soy sauce

1 tablespoon cornstarch

2 tablespoons peanut oil

1 medium onion, cut into 1-inch pieces

1 green bell pepper, cut into 1-inch pieces (about 1 cup)

1 red bell pepper, cut into 1-inch pieces (about 1 cup)

1 (8-ounce) can sliced water chestnuts, drained

3 cups hot cooked brown or white rice