Cook the rotini pasta in a large pot of boiling salted water according to package directions until al dente. Drain and rinse under cold water to stop the cooking process.
In a large mixing bowl, combine the cooked pasta, cherry tomatoes, cucumber, red onion, bell pepper, black olives, and feta cheese.
Add the Italian dressing and lemon juice to the pasta mixture. Toss until evenly coated.
Sprinkle the chopped fresh basil over the pasta salad and toss gently.
Refrigerate for at least 30 minutes before serving to allow flavors to meld.
Notes
The salad can be stored in an airtight container in the refrigerator for up to 3 days. Feel free to customize with additional ingredients like avocado or roasted chicken.