In a medium bowl, combine the ground chicken, ground beef, cottage cheese, garlic powder, onion powder, cumin, salt, and pepper until well incorporated.
Divide the meat mixture into four equal portions and mold each around a wooden or metal skewer into an elongated oval shape.
Heat the olive oil in a large non-stick skillet over medium-high heat.
Place the skewers in the skillet and cook for 4-5 minutes per side, or until the exterior is browned and the internal temperature reaches 165 degrees Fahrenheit.
Remove the skewers from the pan and set aside to rest.
In the same skillet, add the cauliflower rice, cooked white rice, and fresh spinach, sautéing for 3-4 minutes until the spinach is wilted and the rice is heated through.
In a small ramekin, whisk together the Greek yogurt, lemon juice, and chopped fresh parsley to create the dipping sauce.
Plate the rice and spinach mixture, top with the kofta skewers, and serve with the yogurt sauce on the side.