White Pizza With Broccolini

Name: White Pizza With Broccolini
Ingredients: 3 tablespoons extra-virgin olive oil, plus more for drizzling; 1 pound pizza dough, at room temperature; 8 ounces ricotta cheese (about 1 cup); 2 cups shredded part-skim mozzarella cheese; 1/2 cup grated Parmesan cheese; 1/4 cup grated pecorino romano cheese; Pinch of red pepper flakes (optional); Kosher salt and freshly ground pepper; 8 scallions, green parts sliced, white parts cut into 1/2-inch pieces; 1/4 cup chopped fresh herbs (such as mint, parsley, dill and/or basil); 2 bunches broccolini, halved lengthwise and roughly chopped