Season the chicken breasts thoroughly with salt, black pepper, and garlic powder on both sides.
Heat olive oil in a heavy skillet over medium-high heat and sear chicken for 7 minutes per side or until the internal temperature reaches 165 degrees Fahrenheit.
Transfer the chicken to a cutting board and allow it to rest for 5 minutes before slicing into half-inch strips.
In a small bowl, whisk together the Greek yogurt, lemon juice, Dijon mustard, and chopped dill to create the dressing.
Divide the chopped kale, cooked quinoa, cherry tomatoes, cucumber, and red onion equally into four meal prep containers.
Place a portion of the sliced chicken on top of each vegetable base.
Store the dressing in separate 2-ounce containers to prevent the salad from becoming soggy during refrigeration.