Chevron is reshuffling senior leadership over strategy, trading, and business development as the company leans harder on execution and integration while oil markets remain choppy. In a Thursday report, Reuters said Patricia Leigh, Chevron’s president of supply and trading, will retire after 35 years with the company. Molly Laegeler, currently chief strategy officer, will succeed Leigh and take responsibility for supply, logistics, and trading effective March 1. Kevin Lyon, who has been overseeing Chevron’s integration work tied to Hess,…