How to Make It
Cook pasta according to package directions. Drain. Spread pasta on a parchment-lined baking sheet; let cool completely, about 30 minutes.
Meanwhile, stir together mayonnaise, chives, oil, lemon zest and juice, mustard, salt, and pepper in a medium bowl. Chill until ready to use (or up to 3 days).
Stir together pasta, lettuce, tomatoes, bacon, and basil in a large bowl. Add dressing; toss to coat. Serve immediately.