Cook the remaining chicken in the same way and add to the slow cooker, then add the pasta to the slow cooker ... the remaining stock. Add the lemon zest and basil and season with salt and pepper ...
Combine avocado, basil, 4 tsp lemon zest, 6 tbsp lemon juice, dried oregano and olive oil in a food processor or blender. (Alternatively, mash in a bowl with a fork.) Blend until smooth ...