Heat a large pot of salted water over medium-high heat and bring to a boil. Add pasta and cook according to package directions.
Meanwhile, in a deep-sided skillet, cook the bacon on medium heat until it begins to brown. Add the zucchini and olives and sauté on high heat until the zucchini starts to brown. Remove from heat and reserve.
Drain the pasta, reserving 1/2 cup (125 mL) cooking water. Pour pasta back into saucepan. Add the zucchini, olives and bacon and toss to combine. If the mixture looks dry, add cooking water, 1 tbsp (15 mL) at a time, to reach the desired consistency. Transfer to a serving dish and add tomatoes and pepper. Garnish with finely chopped fresh chives and serve.