Heat oven to 350 degrees F. Lightly brush wonton wrappers on both sides with olive oil. Lightly season one side with salt. Using a mini muffin pan, press the wonton wrappers down into the cups, laying back the corners and pressing the bottoms down to make a defined cup. Bake until lightly browned, 8 to 10 minutes. Transfer to a rack and let cool. Using a microplane, zest the lime. Set the lime aside for serving. Add the lime zest to the shrimp along with the olive oil, chili powder, salt, and pepper. Toss then arrange on a baking sheet in one layer. Bake until the shrimp are opaque throughout, 8 to 12 minutes. In a small bowl, stir the sour cream, lime juice and salt together. Fill the cooled wonton cups with a few leaves of arugula, a small dollop of lime sour cream, and a chili-lime shrimp. Serve with lime wedges for spritzing on top.