In a saucepan with sides but wide enough to fit the spaghetti flat, heat the olive oil. Add the garlic, spring onions, leeks, and shallot and cook over medium heat, stirring occasionally, until the leeks are softened, 6 minutes. Add the anchovy, and chilli flakes and stir together.
Then spaghetti, stock, cream, and 1/2 teaspoon of salt and bring to a boil.
Reduce the heat to low and cook, stirring often, until the pasta is tender and a sauce forms, 11 minutes. Stir in the parmesan and then season with salt.
Meanwhile, make the crispy parma ham. Line a tray with baking paper and lay down 4 slices of parma ham. Place under a hot grill for 5-7 minutes until bubbling. You could also place in the oven at 180c for 10-15 minutes. Remove from grill to cool. As it cools, it'll harden and turn crispy.
Serve the pasta into bowls then top with torn oozy burrata and crispy parma ham and more parmesan on the top.