This Chicken Pesto Sandwich is the ultimate easy dinner recipe! A healthy chicken sandwich recipe that is perfect for weeknights, easy to make, and flavorful too! This is one of the easiest chicken breast recipes, and makes for a delicious oven free dinner throughout the year. Grill your chicken, or lightly pan fry it, and top with savory pesto and melty mozzarella cheese. If you're looking for easy chicken recipes for spring and summer dinners, you've found it with this easy pesto sandwich!