Directions for Salad
1. Combine vinegar, water, garlic, orange zest, fennel seeds, peppercorns, and mustard seeds in 2‑cup liquid measuring cup and microwave until boiling, about 5 minutes. Stir in sliced fennel bulb until completely submerged and let cool completely, about 30 minutes. (Pickled fennel can be refrigerated for up to 6 weeks.)
2. Meanwhile, dissolve 2 tablespoons salt in 6 cups cold water in Dutch oven. Cover chicken with plastic wrap and pound to even 1‑inch thickness. Submerge chicken in water and heat over medium heat until water registers 170 degrees. Turn off heat, cover, and let sit until chicken registers 160 degrees, 13 to 16 minutes.
3. Transfer chicken to paper towel–lined baking sheet and refrigerate until chicken is cool, about 30 minutes. Transfer chicken to cutting board and shred into bite-sized pieces using 2 forks.
4. Drain fennel, reserving 1/3 cup brine; discard solids. Whisk reserved brine, oil, and 1/4 teaspoon salt in large bowl. Add chicken, pickled fennel, watercress, and fennel fronds and toss to combine. Season with salt and pepper to taste. Sprinkle with macadamia nuts and serve.
Directions for Roasted Chickpeas
1 Adjust oven rack to middle position and heat oven to 350 degrees. Place chickpeas in colander and drain for 10 minutes. Line large plate with double layer of paper towels. Spread chickpeas over plate in even layer. Microwave until exteriors of chickpeas are dry and many have ruptured, 8 to 12 minutes.
2 Transfer chickpeas to 13 by 9‑inch metal baking pan. Add oil and stir until evenly coated. Using spatula, spread chickpeas into single layer. Transfer to oven and roast for 30 minutes. Stir chickpeas and crowd toward center of pan. Continue to roast until chickpeas appear dry, slightly shriveled, and deep golden brown, 20 to 40 minutes. (To test for doneness, remove a few paler chickpeas and let cool briefly before tasting; if interiors are soft, return to oven and test again in 5 minutes.)
3 Combine paprika, coriander, turmeric, allspice, cumin, sugar, 1/8 teaspoon salt, and cayenne in small bowl. Transfer chickpeas to large bowl and toss with spice mixture to coat. Season with salt to taste. Let cool fully before serving, about 30 minutes. (Chickpeas can stored in airtight container for up to 7 days.)