Step 1

Bring a large pot of salted water to a boil, add spaghetti and cook according to package directions, stirring often, until al dente. Reserve 1 1/2 cups cooking liquid from pasta. Drain spaghetti in a colander and reserve.

Step 2

Heat oil over medium heat in same pot. Add onion and cook, stirring, until softened, about 5 minutes. Return pasta to pot along with tomato, chicken and pasta liquid. Toss well and season with salt and pepper to taste.

Step 3

Transfer pasta to plates. Sprinkle with basil, dot with crumbled goat cheese and serve immediately.