Yes, plenty of people use chicken as the main meat. But "main" does not equate with majority. Or at least, it shouldn't. At maximum it should be about 50% of the RMB portion of the diet (that is, about 35% overall).
Testing the waters with some frozen chicken portions (wings are actually the least useful option - except if you want to hold her food whilst she eats it) seems a good idea. Personally I would choose thighs or drumsticks and defrost them first. Frozen food is more likely to cause near-term tummy upset, and also less likely to be interesting to the dog.
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