Prepare the Chicken:
If utilizing raw chicken breasts, place them in a medium saucepan and cover fully with water. Add 1 teaspoon of salt, bring to a boil, then reduce heat and allow to simmer for 15–20 minutes, or until thoroughly cooked. Remove from the heat, drain, and allow the meat to cool. Once cooled, dice into small, uniform pieces. Alternatively, for a more convenient option, remove the skin from a rotisserie chicken and shred the meat into bite-sized portions. Transfer the prepared chicken to a large mixing bowl.
Cook the Vegetables:
While the chicken cools, proceed to prepare the vegetables. Dice the peeled carrots and potatoes into even-sized cubes. In a separate pot, bring salted water to a boil. Add the diced vegetables and cook uncovered for 10–12 minutes, or until tender but not mushy. Once done, drain the vegetables and rinse them under cold water. Pat dry with paper towels to remove excess moisture, then incorporate them into the bowl with the chicken.
Combine and Season:
Add the thawed peas, diced eggs, chopped pickles, finely minced onion, and fresh dill to the chicken and vegetable mixture. Gently fold all components together to ensure even distribution. Gradually introduce the mayonnaise, adjusting the quantity to reach your desired level of creaminess. Season with salt and ground black pepper according to taste. Mix thoroughly once more and refrigerate until ready to serve. Enjoy chilled.