Bring a large pot of salted water to a rolling boil. Add the orzo and cook for 7-8 minutes, stirring frequently to prevent sticking. Drain pasta but do not rinse.
In a large serving bowl toss together orzo pasta, cherry tomatoes, red onion, cucumber, lemon juice, olive oil, kosher salt and black pepper until combined.
Gently toss in chopped basil and feta cheese. Taste test once more for salt and pepper.
Salad can be served at room temp or be made the night before and refrigerated. Top with fresh lemon slices and basil leaves before serving.
Notes
For leftovers: Squeeze a bit more fresh lemon juice and a drizzle of olive oil toss together before serving.