There is evidence of the change as it was happening -- for example in comparisons of English with foreign languages, or in the spelling reform proposals of the so-called "orthoepists". However, I'm not aware of much "peeving" (complaints about the changing pronunciation).

Two examples may perhaps be found in William Lily's Latin Grammar of c. 1521 (published in 1549).

• Lily criticized the English for pronouncing the a in Latin words like aliquis and alius "too slenderly", as if they were spelled eliquis and elius.

• Lily also criticized the English for pronouncing Latin i "too broadly" (i.e. in a diphthongized manner).

Even here, however, the criticism is of the way English pronunciation is negatively affecting Latin pronunciation, rather than of the change in English pronunciation per se.

Source: E. J. Dobson, English Pronunciation 1500-1700 vol. ii, Oxford: Clarendon Press, 1968.