Grilled Chicken Breasts with Chive and Herb Butter

salted butter, at room temperature

chives (minced)

fresh parsley (minced)

fresh thyme leaves (minced)

lemons (halved, plus zest of 1 lemon and juice of ½ lemon)

boneless (skinless chicken breasts)

extra virgin olive oil

Kosher salt and freshly ground black pepper