Whip Up the Tahini Drizzle: In a small bowl, whisk together the tahini, cool water, fresh lemon juice, and minced garlic. If the dressing becomes too thick, add another tablespoon of water at a time until it reaches a smooth, pourable consistency. Season with an optional pinch of salt, if desired. Set aside.
Simmer the Quinoa: In a medium saucepan, combine the rinsed quinoa with 2⅔ cups of fresh water. Bring to a boil over high heat, then immediately reduce the heat to low, cover, and let simmer for 15 minutes. After 15 minutes, remove the pot from the heat and let it stand, covered, for an additional 10 minutes. Fluff with a fork before serving.
Sear the Chickpeas: While the quinoa rests, prepare the chickpeas. In a small bowl, toss together the smoked paprika, coriander, garlic powder, onion powder, black pepper, and salt. Add the thoroughly dried chickpeas to the bowl and toss to coat evenly. Heat the avocado oil in a large cast-iron skillet over medium-high heat. Once the oil shimmers, add the seasoned chickpeas in a single layer. Cook for 8–10 minutes, stirring occasionally, until they are deeply golden and lightly crisped.
Prep the Fresh Components: As the other elements cook, prepare the fresh ingredients. Slice the cucumbers, quarter the tomatoes, and chop a generous amount of fresh dill and parsley.
Build the Foundation: Divide the fluffy, cooked quinoa evenly among six serving bowls, creating a warm base for the toppings.
Arrange and Serve: Artfully arrange the crisped chickpeas, cucumber rounds, and quartered tomatoes over the quinoa. Add the sliced avocado to each bowl. Garnish generously with pickled shallots, fresh herbs, and a final dusting of sumac. Drizzle with the lemon-tahini dressing right before serving.