Combine the ground chuck, breadcrumbs, eggs, garlic powder, salt, & pepper in a large bowl. Divide into 8 equal sized balls & stuff with a cube of frozen colby jack. Form into thick disc shapes, being careful to cover the cheese with meat. Wrap with 2 halves of the outer shell from the Vidalia & wrap in 2 pieces of bacon - the bacon should be wrapped with 1 piece wrapped vertically & the other wrapped around the burger horizontally. Refer to the pictures in the post for help. Secure with toothpicks & brush the bacon with bbq sauce.