Drain bean salad. Discard liquid. Place bean salad in large bowl.
Add tomatoes, cucumber, onions, parsley, mint, garlic and red pepper flakes to bean salad. Toss to combine.
To make dressing: Combine hummus, lemon juice and seasoning; set aside.
Add dressing to salad just before serving; toss to combine well. Serve at room temperature or chilled.