Bring a large pot of heavily salted water to a rolling boil over high heat. Drop in your pasta and cook according to the package directions for al dente (typically 8 to 10 minutes). It should still have a slight bite in the center so it holds its shape against the heavy mix-ins.

Drain the pasta thoroughly in a colander, then instantly rinse it under a stream of cold tap water until the noodles feel completely cool to the touch. This halts the internal cooking process immediately and washes away loose surface starches that would otherwise turn the salad gummy. Leave it to drain completely.

While the pasta cools, assemble your dressing base. In a medium mixing bowl, combine the mayonnaise, sour cream, dry ranch seasoning, fresh lemon juice, garlic powder, and a pinch of black pepper. Whisk firmly with a fork until the elements emulsify into a perfectly smooth, velvety sauce baseline.

In a separate, very large serving bowl, layer the cooled and dried pasta, shredded chicken, chopped crispy bacon pieces, halved cherry tomatoes, cubed cheddar cheese, and finely diced red onion.

Pour the creamy ranch dressing baseline directly over the pasta and toppings matrix.

Using a wide rubber spatula or two large salad spoons, fold the ingredients together gently from the bottom up until every piece of pasta is uniformly coated in the dressing.

Carefully fold in the diced avocado at the very end. Handling the avocado gently prevents it from mashing and clouding the rest of your salad presentation.

Taste the salad and add an extra pinch of salt or pepper if preferred.

Cover the serving bowl tightly with plastic wrap and place it into the refrigerator to chill for at least 30 to 60 minutes before serving. This cooling window allows the flavors to settle and marry into the noodles beautifully. Stir gently right before dishing it out cold.