Bring a large pot of salted water to a boil. Toss the tomato, squash, chives, lemon zest and 2 tablespoons olive oil in a large bowl. Season with salt. Sprinkle in half of the goat cheese. Add the pasta to the boiling water and cook as the label directs, adding the wax beans to the pot during the last 3 minutes of cooking. Reserve 1/4 cup of the cooking water, then drain the pasta and beans and add to the bowl with the vegetables. Drizzle with the reserved cooking water and the remaining 1 tablespoon olive oil and toss until the goat cheese begins to melt. Add the parmesan and toss. Divide among bowls and top with the remaining goat cheese.