In a large mixing bowl, combine ground chicken, chopped spinach, and shredded cheese. Add garlic powder, salt, pepper, panko, and egg. Mix gently until just combined.

Shape the mixture into patties about 1 inch thick and place them on a plate. Chill in the refrigerator for 10–15 minutes.

In a large skillet, heat olive oil over medium heat until shimmering.

Cook the patties in the hot skillet for 5–6 minutes on one side until golden brown, then flip and cover.

Finish cooking on the other side for another 5–6 minutes, or until internal temperature reaches 165°F (75°C).

Transfer cooked patties to toasted buns and add toppings like lettuce or tomato. Serve and enjoy!