In a medium-sized bowl, whisk the eggs, cream, salt and pepper together.
Heat a large, non-stick pan over medium heat and add a teaspoon of butter or oil.
Pour in the eggs and add the chives and chillies.
Allow to set around the edges then push the edges into the middle of the pan with a spatula or wooden spoon. Cook until the eggs are done to your preference.
Place a tortilla in front of you and add a little cheese, a few slices of ham and a few spoonfuls of egg to one half of the tortilla, then fold over to seal.
Cook in a large pan over medium-low heat until golden brown on both sides with the cheese completely melted.
Remove then serve with avocado and salsa of your choice.