Pat the chicken breast dry and season with half of the sea salt, black pepper, and garlic powder.
In a small bowl, mash the chickpeas with cumin, chopped parsley, and the remaining garlic powder until a thick paste forms, then shape into two small patties.
Heat the olive oil in a skillet over medium heat; cook the chicken for 6-7 minutes per side until golden and cooked through.
In the same pan, sear the chickpea patties for 3 minutes per side until the edges are crisp and fragrant.
Whisk together the tahini, lemon juice, and water in a small jar until the dressing is smooth and pourable.
Assemble the bowl by layering the fresh spinach, sliced cucumber, and halved cherry tomatoes.
Slice the cooked chicken and place it atop the greens along with the seared falafel patties.
Drizzle the lemon-tahini sauce over the entire bowl and garnish with any remaining parsley.