One Pan Garlic Herb Chicken and Veggies

petite red potatoes ((about 10))

boneless skinless chicken breasts

Salt and freshly ground black pepper

chopped fresh rosemary leaves (, divided, plus more for garnish)

chopped fresh thyme leaves (, divided, plus more for garnish)

butter (, divided)

olive oil (, divided)

garlic (, minced)

pkg. frozen green beans (whole or cut)

medium lemon