Iberian Ham and Artichoke Rice

Name: Iberian Ham and Artichoke Rice
Ingredients: 1 lemon, halved; 3 large artichokes; 1/2 cup plus 1 tablespoon extra-virgin olive oil; Kosher salt; 2 tablespoons hazelnuts; 1 cup finely chopped onion; 6 ounces very thinly sliced dry-cured ham, such as jamon Ibérico or serrano, 4 ounces finely chopped; 2 medium tomatoes—halved, seeded and finely chopped; 4 cups chicken stock or low-sodium broth; 2 cups Bomba or Calasparra rice (see Note); 1/2 cup lightly packed parsley; 1/2 small garlic clove