Dale is probably my favorite animated character and yeah, his voice changes were noticeable but didn't really bother me. Can just chalk it up to all his smoking. Will probably be less noticeable in future seasons when he has one consistent voice.
The voice that really sounded off was Khan. I don't think I like it too much.
Also was not expecting characters to actually say "Shit" and "Side-dick" lol.
Junichiro making an appearance was awesome and pretty cool to see G.H. but seems a little older than he should be? Wonder if he will appear a little more regularly to replace a younger Bobby Hill's spot.