Chevron's problems come from the executive level. They have no vision or plan, but merely are looking to meet short-term investor expectations. It's all about trying to make money with the familiar base business in the most frugal way possible.
A few problems include: (1) Large-scale capital projects are never as successful as desired, (2) there's no growth strategy aside from gobbling up competitors, and (3) with the focus on short-term profits, the alternative energy work and research that could constitute a future vision ends up going nowhere. It isn't entirely just greenwashing, but it's definitely nowhere near as important as investor dividends.
Finally, Chevron's new ENGINE project - an engineering call center in Bangalore - will probably make a long-term engineering job with Chevron unstable and financially unrewarding for domestic US employees. Expect chronic layoffs as ENGINE expands.