Okinamiyaki would be an awesome name, but a) it's generic already; and b) non-Japanese Americans will have a really hard time remembering it.
I actually do like "Monk's Pan." But maybe you need to consider who the name is going to resonate with--are you hoping to attract Japanese visitors and Japanese-Americans? They'll get it. If you're going for a Western-heritage audience, they might be intrigued by the name (I would be!) but maybe just confused.
On the third hand, I wonder if the people who'd be turned off by such a name are not really your market anyway. A person who says "Monk's Pan? What kind of junk is that?" might not be someone in a hurry to try new things.