In a large pot or deep skillet, melt the butter over medium heat.
Add the minced garlic and red pepper flakes. Sauté for about 1-2 minutes until fragrant, making sure not to burn the garlic.
Add the shrimp to the pan and season with salt and pepper. Cook for about 2-3 minutes until shrimp are pink and opaque. Remove the shrimp from the pot and set aside.
In the same pot, pour in the chicken broth and bring it to a boil.
Add the pasta to the boiling broth and cook according to package instructions, usually around 8-10 minutes, stirring occasionally.
About 3 minutes before the pasta is done, add the cherry tomatoes and the cooked shrimp back into the pot. Stir gently to combine.
Once the pasta is cooked and the liquid is mostly absorbed, remove the pot from the heat.
Add lemon zest, lemon juice, and fresh parsley. Toss everything together to ensure even distribution of flavors.
Taste and adjust seasoning if necessary.
Serve immediately, garnished with grated Parmesan cheese if desired.
Notes
Adjust red pepper flakes to taste for desired spiciness.