From what I can tell, there never was a "Marker Felt Italic" released by the original artist (Pat Snyder). The originals were Thin and Wide. Apple "bought"/licensed the font and made a few alterations.
As such, I'm assuming Marker Felt Italic is a bit of a "rip".
This is Marker Felt (Thin) "transformed" in Motion:
To me, it looks nearly identical to the Marker Felt Italic font available on fontzone.net.
Final Cut doesn't provide the feature, but Motion does. In the Text > Format inspector, there is a parameter called "Slant". I used 12.0 (degrees) for this example. For a logo, you could use any graphics application that allows for this kind of "distortion" (and they almost all do!) and just make a "one-off" graphic instead of adding another font or creating a Motion template that allows slanting.
Slanting is *not* italics, but most people really don't know the difference and with a font like Marker, you can get away with it.