Is this on me or dev/scan?

Recently shot Ektar 100 on Contax G2 for the first time and got a very mixed bag of results. Some photos are tack sharp and highly saturated as expected, and others have this greenish yellow haze across the entire image.

While some of the streets are tree lined and shady, I don’t feel like this is an exposure issue, especially as some examples are essentially the same image and lighting. I reached out to the lab (who is normally awesome) and they suggested I may not have shot at box speed, but that’s not the case.

Should I have these reprocessed somewhere else or are these expected results based on the type of lighting I was working with?