Heat 1 tbsp of oil in a sauté pan over medium heat and sauté the onions and 1/2 teaspoon of salt for 4 minutes or until tender. Set aside to cool.
In a mixing bowl, combine the cooled sautéed onions, ground chicken, BBQ sauce, onion powder, garlic powder and remainder of salt and mix. Don't over mix to avoid tough, chewy burgers.
Evenly divide the mixture into 4 pieces for regular sized burgers, or 8 pieces for mini burgers. Shape into patties.
Heat remaining tbsp of oil in a pan and cook the patties for 4-5 minutes (3-4 minutes for sliders) on each side.
Place 1 slice of cheese on each patty during the last minute of cooking and allow to melt.
Place burgers on buns and top with desired accompaniments.