I work at Swiss chalet. All we do is take the chicken, put a spoonful of salt inside it. Bast the outside lightly with melted butter.
Then they go on spits and into the ovens until the internal temperature is 180° F and they are golden brown on the outside.
Barbeque’s usually have the option of using a spit. You can buy a set for using spits for $50 - $90 at Canadian Tire or Home Hardware. A little pricey, but it will more than likely be worth it. Especially since summer is coming and you may want to use it again.

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