Pour a boiled kettleful of water into a medium pan, salt the water and bring it back to the boil over a highish heat. Tip the potatoes into the water and boil for 5 minutes. Tip the pasta into the same water, give it a stir and continue to boil everything for about 10 minutes or until the pasta and potatoes feel soft when prodded with a fork.
While the pasta is cooking, chop the tomatoes into chunky pieces, then chop them a little bit more, as you would for a salsa. Scrape the tomatoes and their juice off the board into a bowl. Season generously with salt and pepper and mix in the olive oil, garlic and crushed chilli until it’s all amalgamated.
When the pasta and potatoes are cooked, toss them in the bowl with the tomato sauce until evenly coated. Divide the pasta between two bowls and serve with a sprinkling of grated cheese.