Gather all your ingredients for the spaghetti salad. Chop the veggies into bite-sized pieces.

Bring a large pot of salted water to a boil. Add spaghetti and cook according to package instructions until al dente, about 8-10 minutes. Drain and rinse under cold water.

In a small bowl or jar, combine olive oil, vinegar, Italian herbs, garlic powder, salt, and pepper. Whisk or shake until well blended.

In a large bowl, combine cooked spaghetti, chopped veggies, olives, and dressing. Toss gently to combine.