In a medium bowl, combine bread crumbs, egg product, and barbecue seasoning. Add chicken; mix well. Shape chicken mixture into six 1/4-inch-thick patties.

In a medium bowl, combine turkey, garlic powder, and pepper. Shape mixture into six 1/2-inch-thick patties. Place chicken patties on top of turkey patties. Shape the edges of the turkey patties up the sides of the chicken patties, pinching the patties together to seal. Wrap a bacon slice around each patty and secure with a wooden toothpick.

For a charcoal grill, grill patties on the lightly greased rack of an uncovered grill directly over medium coals for 14 to 18 minutes or until an instant-read thermometer inserted into the side of each patty registers 165 degrees F, turning once halfway through grilling. If desired, sprinkle cheese on patties for the last minute of grilling. (For a gas grill, preheat grill. Reduce heat to medium. Place patties on a lightly greased grill rack over heat. Cover and grill as above.)

Remove toothpicks. Place patties on top of muffin bottoms. Top with green onion and muffin tops.