Apple - Spotlight can't find Google Chrome app

Deleting Spotlight's index of your files and reinitializing it should allow it to find your apps in the Applications folder.

1. Turn off spotlight:

sudo mdutil -a -i off

2. Unload its metadata plist:

sudo launchctl unload -w /System/Library/LaunchDaemons/com.apple.metadata.mds.plist

3. Load its metadata plist:

sudo launchctl load -w /System/Library/LaunchDaemons/com.apple.metadata.mds.plist

4. Turn on Spotlight again:

sudo mdutil -a -i on

Make sure the "Applications" option is selected in System Preferences >> Spotlight >> Search Results:

If Google Chrome is installed (and in the Applications folder) pressing Command⌘+Spacebar and typing "chrome" will make Spotlight display the application as the top hit: