Exhibit 23.3 CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM We consent to the incorporation by reference in Registration Statement No. 333-156455 on Form S-3 of our report dated February 27, 2009, relating to the consolidated financial statements of Chimera Investment Corporation, and the effectiveness of Chimera Investment Corporation's internal control over financial reporting, appearing in this Annual Report on Form 10-K of Chimera Investment Corporation for the year ended December 31, 2008. /s/ DELOITTE & TOUCHE LLP New York, New York February 27, 2009