In a large pot of salted boiling water, cook the pasta according to package instructions until al dente. Reserve 1 cup of pasta water, then drain the pasta and set aside.
In the same pot, heat the olive oil over medium heat. Add minced garlic and red pepper flakes, sautéing for about 1-2 minutes until fragrant but not browned.
Reduce heat to low. Add the cooked pasta back into the pot along with the crumbled feta, lemon zest, and lemon juice. Toss well to combine.
Gradually add reserved pasta water, a little at a time, until the pasta reaches your desired creaminess.
Fold in the cherry tomatoes and chopped basil, mixing until everything is evenly distributed and warmed through.
Taste and season with salt and pepper as needed. Keep in mind that feta is salty, so adjust accordingly.
Plate the pasta and, if desired, sprinkle with grated Parmesan cheese for an extra touch of flavor.
Notes
Serve with extra basil and a lemon wedge for garnish.