Cook the rotini pasta according to package directions until just tender, then drain it completely in a colander. I let mine sit for a full minute after draining so every bit of water runs off—this prevents your cozy Italian pasta salad summer recipe from becoming watery. Hot pasta is exactly what you want right now; don't rinse it or let it cool.

Transfer the hot pasta to a large mixing bowl and immediately drizzle it with extra-virgin olive oil and fresh lemon juice. Toss everything together for about one minute, coating every strand. This step matters because the warm pasta absorbs the citrus and oil flavors instead of just sitting on top—I've seen too many recipes skip this, and it shows in the final texture.

Stir in the dried oregano, salt, and black pepper while the pasta is still warm. The heat actually releases the oregano's essential oils, which means you get more Mediterranean flavor than if you add these seasonings after everything cools down. Let the pasta cool to room temperature for about five minutes—it should still be warm to the touch but not hot.

Add the mozzarella cubes, feta crumbles, and sliced Kalamata olives to the warm pasta. These cheeses need a minute to start releasing their flavors into the dressing. If you add them after the pasta completely cools, you're missing the chemistry that makes this warm summer pasta sing.

Fold in the halved cherry tomatoes, diced cucumber, finely chopped red onion, and fresh parsley. Keep your motions gentle here so you don't crush the vegetables or break apart the delicate cheese curds. Everything should come together in about one minute of careful tossing.

Add the cooked chicken strips and toss everything one final time until evenly distributed. The chicken picks up all those Italian flavors as it mingles with the warm dressing. I usually let the entire salad sit for ten minutes before serving so the flavors really settle and marry together—this is when you'll taste the difference.