For Pickling Solution:
Combine all ingredients in a sauce pot over medium heat until sugar and salt dissolve. Remove from sauce pot and set aside to cool to room temp.
For Pickled Beets:
Pre-heat oven to 350°F. Combine beets, thyme, extra virgin olive oil, a good pinch of salt and pepper in a high-walled baking dish. Squeeze orange halves over the mix and toss to combine. Cover baking dish and roast until the beets are tender and easily pierced with a paring knife, about 35 minutes. Once tender, remove dish from oven and leave covered for 15 minutes to let beets cool slightly and steam a bit. Using a dish towel (or two, they will be hot!) peel the skins off the beets. Once beets are free of skin, cut into ¼ inch cubes and place into a bowl. Cover with pickling solution and let sit in refrigerator at least overnight. Beets will keep covered in pickling solution in a refrigerator for 2 weeks.
For Pickled Mustard Seeds:
Boil mustard seeds in enough cold water to cover. Drain water and repeat this process 3 times to blanch and remove bitterness. Combine with pickling solution, bring to a boil and let cool to room temperature. Mustard seeds will keep covered in pickling solution in a refrigerator for 2 weeks.
For Farro:
Combine all above ingredients with 6 cups water, salt and pepper to taste in a medium pot and bring to a boil. Reduce to a simmer and cook until farro is tender, but not mushy, about 30 minutes. Drain excess water and spread on a sheet tray to cool, removing spent aromatics.
For Everything Spice:
Combine all ingredients in a bowl and mix well. Set aside.
For Bowl Assembly:
In a large bowl, add cooked farro, pickled beets, 2 Tbsp. of pickled mustard seeds, 2 Tbsp. olive oil, picked tarragon and parsley, 1 Tbsp. chives, zest and juice of 1 lemon and mix well. Season with salt and pepper to taste. Divide farro into four bowls. Using the same large bowl, break up the salmon. Divide salmon into a neat pile on top of the farro in each bowl. Garnish with a heavy pinch of the everything spice, the remaining chives, a pinch of flake salt, and a light drizzle of olive oil and lemon.