Bring a large pot of salted water to a rolling boil—you want it aggressive, not just steaming. Add your 2 cups of whole wheat pasta and stir immediately so nothing sticks together. Cook until just under al dente (about one minute less than the package suggests), because the pasta will continue softening as everything chills later. I learned this the hard way after making limp stunning summer cold pasta with herbs recipe at Marco's actual dinner party.
Drain the pasta in a colander, then rinse with cold water until it's completely room temperature—not chilled yet, just no longer warm. This stops the cooking process and prevents the starches from turning gummy. Pat it dry gently with a clean kitchen towel. The drier your pasta at this stage, the better the oil will coat each piece without making everything slick and heavy.
While the pasta cools, whisk together your 1/4 cup extra-virgin olive oil and 2 tbsp fresh lemon juice in a separate bowl. Add 1 tsp salt and 1/2 tsp black pepper, then taste it—you should feel the acid cutting through the fat, not one overpowering the other. This dressing is the backbone of your entire dish, so get it right before mixing everything else in.
In a large mixing bowl, combine your cooled pasta with the dressing, tossing gently but thoroughly so every strand gets coated. Add your 1 cup shredded chicken breast, 1/2 cup halved cherry tomatoes, 1/2 cup diced cucumber, and 1/4 cup finely chopped red onion. The raw vegetables stay crisp because you're not cooking them into submission, and they'll release just enough liquid to keep everything moist overnight without turning soggy.
Now comes the part most people rush: fold in your fresh herbs last. Use 1/4 cup chopped fresh parsley, 2 tbsp chopped fresh mint, and 1/4 cup chopped fresh basil—but keep them separate in your hands until the very last second. This keeps their color brilliant green instead of bruised and dark. I add the parsley first because it's hardier, then mint, then basil as a final layer. Your beautiful herbed pasta suddenly looks like it came from an actual restaurant at this point.
Gently fold in your 1/3 cup crumbled feta cheese and 1/4 cup roasted pine nuts. Don't overwork it—you want distinct pockets of cheese and texture, not a homogenized paste. Taste again and adjust salt or lemon if needed. Cover the bowl and refrigerate for at least 30 minutes, though overnight is truly where this stunning summer cold pasta with herbs recipe gets interesting as flavors meld together.