Los Angeles is about 1.4 times bigger than Chesapeake.

Chesapeake is approximately 877 sq km, while Los Angeles (including the city proper only) is approximately 1,215 sq km, making Los Angeles 39% larger than Chesapeake.
Tip: This to-scale comparison of Chesapeake vs. Los Angeles uses the Mercator projection, which distorts the size of regions near the poles.
Our free app, MapSize by MyLifeElsewhere — compare any two places, to scale on your mobile device.