Start by cooking your quinoa. Add the quinoa to a large saucepan with 600ml cold water. Bring to a simmer over a medium heat, then cook gently for 15-20 minutes until the quinoa is puffed up and soft. Leave to cool.
For the dressing, peel and finely chop the garlic. Chop the coriander. Put in a bowl with the juice of one lime, the olive oil and a pinch of salt. Stir and leave to one side.
Slice the chicken breasts. Peel and slice the avocado.
To serve, spoon the quinoa into bowls. Top with the sliced chicken breast and avocado. Top each bowl with a spoonful of Greek yoghurt, a drizzle of the dressing and a wedge of lime.