Heat oil in a frying pan on low-medium heat. Cook ground chicken until brown, stirring in minced garlic, dried oregano or parsley, and chopped onion. Cook until onion is translucent
Make taco spice mixture by adding chili powder, cumin, paprika,1/2 tsp sea salt, and red pepper flakes to 1/4 cup warm water. Stir well and pour onto the chicken mixture. Cook for 3 minutes for flavours to marry
Prep chopped veggies, sour cream, and other toppings in bowls for self serving. Make the guacamole by mixing all guacamole ingredients in a bowl and mash with a fork
Spoon cooked taco meat into lettuce leaves and top with diced veggies, cheese, sour cream, guacamole and fresh cilantro