Boil the Pasta: Fill a large pot with water and add salt. Bring to a boil, add macaroni and cook until al dente, about 8-10 minutes.

Prepare the Vegetables: Chop celery and bell pepper, slice green onions, and grate carrots, about 5-7 minutes.

Drain and Cool Pasta: Drain pasta, rinse it under cold water, and let it cool for about 5 minutes.

Cook the Bacon: In a skillet, cook bacon until crispy, about 8-10 minutes. Drain and crumble.

Cook the Chicken: Poach, grill, or roast chicken until fully cooked, about 15-20 minutes, then cool and shred.

Make the Dressing: In a mixing bowl, combine mayonnaise, sour cream, vinegar, mustard, sugar, garlic powder, paprika, dill, salt, and pepper. Whisk until smooth.

Combine the Ingredients: In a large bowl, mix cooled macaroni, cooked chicken, and all prepared vegetables.

Add the Dressing: Pour dressing over pasta mixture and toss gently to coat everything evenly.

Finish and Serve: Add crumbled bacon and diced avocados before serving. Adjust seasoning if necessary.