I wouldn't say uninteresting, but yeah, it proves how BAD Naruto as a manga is to their females.
I'd give Tsunade and Konan the nudges for really well written.
Tsunade is actually decent as far as females in
shonen go. She has a back story, she has development, and she's partaked in a few fights. She's also hokage. She's probably the best written
out of the females in this series.
Konan had a decent backstory, but it looked like she was just more along for the ride with Yahiko and Nagato. Her story was tragic and she had some development, along with a badass fight. However, Nagato overshadowed her imo. But she was still pretty well-done as far as females in this series go. It was nice to see the team dynamic she had with Yahiko and Nagato as well when they were kids and how they watched out for each other.
I also liked pt1 Temari too because she looked badass along with her siblings, she was a decent wind kekkai-genkai user, and Kishimoto could have gone in-depth with her and her brothers...but he only really did that for Gaara. In pt2, Temari is still likeable, but she's kind of reduced to being Shikamaru's love interest. :/
I don't think any other females in the series were well-written, though. Most don't have much elaboration on their past or they're just too one-dimensional.