Cook pasta in boiling salted water according to package directions. Reserve about 1 cup of pasta water. Drain and set aside.
Heat the olive oil in a large, high-sided saute pan over medium heat. Melt 1 tablespoon of the butter into the olive oil.
Add the garlic and cook, stirring, for 1 to 2 minutes until fragrant.
Add the shrimp and cook, stirring, for 2 to 3 minutes per side, until shrimp is pink and firm to the touch.
Add the pasta and toss to combine. Continue to cook, stirring, to incorporate the pasta with the shrimp. Add half of the lemon juice and all of the zest, along with the pasta water as needed to help form a glossy sauce.
Add the remaining tablespoon of butter and toss to melt and combine. Add 1/2 teaspoon of salt and a few grinds of black pepper and stir to combine.
Taste and adjust the seasoning. Add more lemon juice and serve.