In a medium jar, stir together the herbs, lemon juice, lemon zest, garlic, red pepper flakes, salt, and ⅓ cup of the olive oil.
Add the mozzarella and top with the remaining ⅓ cup olive oil, adding more as needed to cover the mozzarella.
Cover and refrigerate for at least an hour before serving. Store in the refrigerator for up to 5 days.
