Smashed Potato and Chorizo Sheet Pan Salad

Name: Smashed Potato and Chorizo Sheet Pan Salad
Ingredients: 1 1/2 pounds baby red or Yukon Gold potatoes; Kosher salt; 5 tablespoons extra-virgin olive oil , divided; 1 pound fresh Mexican chorizo , casings removed if using links; 4 medium scallions , white and pale green parts cut into 1-inch pieces and dark green parts thinly sliced, divided; Finely grated zest of 1 medium lime; Juice of 1 medium lime (about 2 tablespoons); 1 small clove garlic , grated or minced; 1⁄2 medium romaine lettuce heart , sliced into thin ribbons; 4 ounces queso fresco cheese , crumbled (about 1 cup)