A while back I was thinking about the chicken pieces you get in BIR's nowadays (at least down here in the South, it's almost invariably chicken breast), and I realised, that they do not fry the meat at all.
When you get a BIR chicken dish, you can quite clearly see the shape of the chicken as it has been cut from a breast fillet. If you fry one of those, the shape of the piece of meat will change as the fibres tighten, no matter how gently you do it.
I tried this the next time I made a dish with a sauce. Just cut? the chicken into pieces and added them, uncooked, to a very, very gently simmering sauce.
The result was very tender chicken with exactly the texture you get in a BIR. This is one aspect of BIR cooking that I think it is well worth emulating.
Of course, chicken breast is not the best flavoured meat, so it's probably better not to use it exclusively.