I've said this on this forum several times before ... eventually someone will listen and take it in. The original Potuguese Vinha D'alho was a pork dish with red wine vinegar and/or toddy vinegar.
To be specific, it was a fatty-pork dish, and the added acids served the specific purpose of tempering the fat that had rendered from the pork to make it more palatable, forming an emulsion rather than an oil slick. If you're using chicken, unless you're also adding schmaltz (oi vey!), no - or very little - acidic condiment should be added. Traditional vindaloo is not ... I repeat, NOT ... a sour dish.
Having said that, the modern BIR (mis)interpretation of ye olde vindaloo is a hot curry to which in their ignorance, and they should really know better, vinegar is added. That then gives a sour vindaloo (spit!) and if that's what you aim to emulate, well, it's well off the original Potuguese Vinha D'alho.