I think they're pretty nice even though some of the effects he uses to set his work apart can interfere. And of course, viewing a bunch of them together makes them seem stereotypical. Actually, seeing a collection of works by almost any artist reveals a sameness. That might be because it's simply due to a painter's personality or perhaps because economic survival requires producing work in a distinctive manner. In any case, Piccoli's style has evolved slightly over time, perhaps because his stuff seems to sell well and he can now trade on his name rather than the exact kind of paintings that launched his career in the American galley scene.
I haven't been able to find much biographical information on the Internet; this at least goes on for a couple of hundred words.
The square, lens-like shape in the middle is typical of the Picolli works that I first noticed eight or nine years ago in Carmel. He seems to have abandoned this career-launching quirk, generally a good move on his part.