The Tasha Frontal Necklace has a similar feel to the J. Crew Bubble. It is big and playful, and there are a ton of options to add a fun pop of color to any outfit. But since it doesn't hang down, it avoids all of the problems I have with the other necklace.
Did I mention it is 1/3 of the price?
Buy the Tasha Frontal Necklace at Nordstrom