Heat Melt(R) in large skillet over medium heat until very hot, about 3 minutes. Stir in ginger, garlic, scallions, and jalapeno; cook, stirring constantly, until very fragrant, about 2 minutes. Stir in zest, fish sauce, salt, pepper, coconut milk, lime leaf, and tomatoes. Cook until reduced slightly, about 8 minutes.
Stir in shrimp, continue cooking until shrimp is pink and just cooked through, about 5 minutes. Serve atop plain rice; finish with fresh lime juice, cilantro, and sesame chili oil.