Amazon.com Inc. filed a request with the Federal Trade Commission seeking the recusal of new Chairwoman Lina Khan from antitrust investigations of the company, in light of her substantial past criticism of the online behemoth.“Given her long track record of detailed pronouncements about Amazon, and her repeated announcements that Amazon has breached the antitrust laws, a reasonable observer would conclude that she no longer can consider the company’s antitrust defenses with an open mind, “Amazon stated in a 25-page motion filed on Wednesday with the FTC.An FTC spokeswoman declined to comment.Ms. Khan has been a leading critic of dominant technology companies-especially Amazon-and a central figure in a movement that favors sweeping changes to antitrust laws to take on the nation’s most powerful firms. The Senate confirmed her earlier this month for the FTC, and President Biden immediately installed her as the head of the agency.Amazon’s recusal request comes at a crucial time both for the company and the FTC.