Season the chicken breast with half of the garlic powder, sea salt, and black pepper.
Heat olive oil in a skillet over medium heat and cook the chicken for 6-7 minutes per side until golden and cooked through.
Remove the chicken from the skillet and set aside; in the same pan, add the chickpeas and sauté for 3-4 minutes until slightly crisp.
In a small mixing bowl, whisk together the Greek yogurt, lemon juice, fresh dill, onion powder, and the remaining garlic powder to create the ranch dressing.
Slice the cooked chicken into bite-sized strips or cubes.
In a large salad bowl, combine the mixed greens, sliced cucumber, and halved cherry tomatoes.
Add the toasted chickpeas and sliced chicken to the bowl.
Drizzle the creamy dill ranch dressing over the top and toss gently to combine before serving.