Chinese Style Orange Almond Chicken

Name: Chinese-Style Orange-Almond Chicken
Ingredients: 30 g slivered almonds; 1 tablespoon peanut oil or 1 tablespoon vegetable oil; 4 boneless skinless chicken breasts; 60 g shallots, chopped; 100 g mushrooms, sliced; 100 g orange marmalade; 3 tablespoons soy sauce, low sodium; 1⁄4 teaspoon fresh ground black pepper, to taste; orange slice (optional)