Boil the Pasta: Bring a large pot of salted water to a rolling boil over medium-high heat. Once boiling, add the capellini pasta and cook for about 5 minutes until it's al dente. Drain and rinse under cool water.

Whisk the Dressing: In a large mixing bowl, combine lemon juice, olive oil, garlic salt, and black pepper. Whisk until emulsified.

Combine Ingredients: Add the cooled capellini to the dressing, then mix in the diced tomatoes and capers. Toss to combine until evenly coated.

Add Fresh Herbs: Incorporate chopped parsley and lemon zest into the salad. Mix thoroughly to ensure herbs are distributed.

Serve or Chill: Serve immediately or cover and chill for 30 minutes to meld flavors. Toss before serving.