Bring a large pot of salted water to a rolling boil and cook the pasta until al dente, then drain and set aside.
Heat olive oil in a skillet over medium heat until shimmering and fragrant, about 1 minute.
Add the minced garlic to the skillet and sauté for about 30 seconds until it becomes fragrant and lightly golden.
Pour in the halved cherry tomatoes and cook, stirring occasionally, until they soften and start to release their juices, about 5 minutes, filling the kitchen with a bright aroma.
Add the chopped spinach to the skillet and cook for 2-3 minutes, stirring until wilted and combined with the tomato mixture.
Stir in the cooked pasta and crumble the feta cheese over the top. Toss everything gently to combine, letting the feta melt slightly into the sauce.
Season with salt and pepper to taste, then serve immediately while still warm and vibrant.