Cook the pasta

• Bring salted water to a boil in a stockpot.
• Cook the pasta until al dente, then drain and rinse under cold water.

Cook the chicken and bacon

• Cook the chicken in a frying pan until golden and cooked through, then dice.
• Crisp the bacon in the same pan, then crumble it.

Make the ranch dressing

• Whisk the Greek yogurt, mayonnaise, ranch seasoning and milk in a mixing bowl.
• Season with salt and pepper.

Assemble the salad

• Add the pasta, chicken, bacon, cherry tomatoes, red onion and cheddar to the dressing.
• Toss well and fold in the chives.

Chill and serve

• Refrigerate the salad so the flavors blend.
• Serve cold.