Season the chicken breast evenly with half of the sea salt, black pepper, and garlic powder.
Heat the olive oil in a medium skillet over medium-high heat and cook the chicken until golden brown and the internal temperature reaches 165°F, about 6 minutes per side.
While the chicken is cooking, prepare the dressing by whisking together the tahini, lemon juice, warm water, and the remaining salt, pepper, and garlic powder in a small bowl until smooth.
Remove the chicken from the skillet and let it rest for 3 minutes before slicing into bite-sized strips.
In the same skillet, add the chopped kale with a tablespoon of water and sauté for 2 minutes until just wilted and bright green.
In a large serving bowl, combine the warm kale, cooked quinoa, and sliced chicken.
Drizzle the lemon-tahini dressing over the salad and toss thoroughly to coat all ingredients before serving.