I found this recipe on Tasty Kitchen, and also from My Retro Kitchen and they really are very good. I've made a bbq chicken sandwich before, but wanted to try a different recipe. These are very easy to make. I followed Aime's suggestion to use just half a can of pineapple, and I'm glad I did. If you want to use a whole can of pineapple, I would suggest using a bold and spicy BBQ sauce. It so happens that I bought the same sauce that Aime used when she first made these sandwiches (Sweet Baby Ray's - Original), and I found it to be a little bland. I did have another bottle of Sweet Baby Ray's Hickory and Brown Sugar BBQ Sauce, and ended up adding the whole bottle. Next time though, I will try a different sauce. At any rate, this is a very tasty sandwich and it makes a lot.
3 to 3 1/2 lbs of boneless, skinless chicken breasts and thighs
chopped onion (I did not use the onion, because my kids wouldn't eat it if I had)
1/2 to 1 whole can of crushed pineapple (I used half a can)
1 bottle BBQ Sauce
Place the chicken in the crock pot and pour the pineapple over the chicken and pour the BBQ sauce over all. Cover and cook on high for 4-6 hours. An hour before it is done, take the chicken out and shred it and put back in the sauce in the crock pot, so the chicken can absorb the sauce. Be sure to cook it long enough so that the chicken is tender. Serve on hamburger buns.