Cook the chicken with diced onion and salt and pepper until the meat falls apart.
Cook vegetables and eggs in boiling water until they become completely soft.
Shred the chicken in a bowl. If you are using lunchmeat, dice them in tiny shapes.
Peel the potatoes and mash them. Add butter to them and let the butter melt with their heat.
Peel the carrots and dice them in tiny ½ inch sizes.
Peel the eggs and shred them into the bowl.
Dice the pickles like carrots.
Add boiled softened sweet green peas to the bowl.
Mix the ingredients well.
Add mayonnaise and lemon juice and mix it well with the composition.
Taste your Olivieh and add salt, pepper, or lemon juice if needed.
Pout the mixture into a tray or any flat dish and cover it with a tablespoon of mayonnaise.
Decorate the dish with parsley, pickles, and tomatoes.