Honey Mustard Chicken and Vegetable Kabobs

Name: Honey Mustard Chicken and Vegetable Kabobs
Ingredients: 1/4 cup honey mustard, plus more for serving; 3 tablespoon lemon juice; 3 tablespoon canola oil or extra-virgin olive oil; 1/2 teaspoon salt; 1/2 teaspoon ground black pepper; 1 1/4 pound boneless, skinless chicken breasts and/or thighs, cut into 1 1/2-inch chunks; 1 pound button mushrooms; 1 large eggplant, cut into 1 1/2-inch chunks; 2 bunches green onions, cut into 1 1/2-inch pieces; 2 red bell peppers, cut into 1 1/2-inch pieces; 2 (6-ounce) packages rice pilaf mix, prepared according to package directions