Cut zucchini in half lengthwise and using a spoon or melon baller, scoop out flesh, leaving 1/4" thick. Arrange in a baking dish.
Chop the scooped out flesh of the zucchini in small pieces.
In a large skillet, melt the butter and add onion, shallot and garlic. Cook on a medium-low for about 2-3 minutes, until onions are translucent.
Add chopped zucchini and season with a pinch of salt, cook about 2-3 minutes.
Add wine and cook until it reduces.
Add ground turkey and season with salt and pepper, cooking until turkey is cooked through, breaking up in smaller pieces, about 5 minutes.
Add paprika, garlic powder and Italian seasoning. Mix well and cook another minute. Set aside to cool.
When cooled, add parmesan cheese and egg white, mix well.
Using a spoon, fill hollowed zucchinis with stuffing, pressing firmly and top with bread crumbs. Place chicken broth in bottom of the baking dish and cover tightly with foil.