Bring a big pot of salted water to a rolling boil. Add the 12 oz rotini and cook according to package directions, usually about 10-12 minutes. Drain the pasta in a colander and set it aside to cool slightly for 2-3 minutes.
While the pasta cooks, prepare your vegetables. Halve the cherry tomatoes, dice the cucumber into small chunks, and mince the red onion finely. The smaller pieces mix better into your 4th of july pasta salad family and distribute the flavor more evenly.
In a small bowl, whisk together the olive oil, lemon juice, honey, dried oregano, salt, and black pepper. Taste and adjust the seasonings as you go because everyone's palate is different. This simple dressing comes together in under a minute and beats store-bought versions by miles.
Put the slightly cooled pasta into a large bowl. Add the shredded chicken, diced vegetables, green olives, and cheddar cheese. Pour the lemon dressing over everything and toss gently but thoroughly.
Make sure every strand gets coated with that delicious dressing. The pasta will look a little dry at first, but it'll absorb the liquid beautifully as it sits. I always give it one more toss after 5 minutes to redistribute everything evenly.
Chill for at least 30 minutes if you have time, though this easy family pasta salad is totally fine to serve right away. The cold version tastes fresher for potlucks and backyard parties. Before serving, give it another quick toss and taste to see if it needs a pinch more salt or lemon.