Cook Farro:Fill a medium pot half full of water. Add a pinch of salt and bring to a boil. Add farro; reduce heat and simmer until the farro is tender, about 15 to 20 minutes for pearled farro; 20 to 30 minutes for semi-pearled farro; up to 40 minutes for whole farro. Drain, then spread grains onto a large plate or sheet pan to cool for 15 minutes.
While farro cools, prepare Almond Honey Mustard Dressing by combining all dressing ingredients in a medium bowl and mixing until smooth.
In a large bowl, combine arugula, Brussels sprouts, pecans, and farro; season with a pinch of salt and give it a toss. Add dressing and toss to combine. Add goat cheese and chicken (or chickpeas); toss again. Serve immediately.
