Home Health-Fitness Flat Belly Foods: 400-Calorie Lunch Recipes: Chicken, Spinach, and Artichoke Panino Top 1 slice whole-grain bread with 1/2 cup baby spinach, 1/4 cup quartered artichoke hearts, 2 1/2 ounces sliced chicken breast, 1 slice provolone, and a second slice whole-grain bread. Heat a grill pan over high heat and coat with nonstick cooking spray. Grill sandwich 3 to 4 minutes a side, pressing down with a spatula once on each side.