Rinse the lentils and add them to a medium saucepan with thyme, bay leaf, salt, and vegetable broth. Bring the lentils to a boil, then reduce the heat to simmering. Cook uncovered or with the lid cocked. Simmer for 20 minutes or until the lentils are tender but not mushy.
While the lentils cook, preheat the oven to 425 F (220 C). Cut the pita bread into bite-sized squares or strips and add them to a baking tray. Bake for 10 - 15 minutes or until they are crispy. Toss the pita squares a few times so that they toast on both sides.
Make the dressing by combining the tahini, pomegranate molasses, lime juice, garlic, and salt in a small bowl. If it is too thick, add more lime juice or water until you have a pourable dressing.
In a large salad bowl, add the cucumber, radishes, red onions, tomatoes, lettuce, pomegranate, mint leaves, and chopped parsley. Mix in the cooked lentils, then garnish the salad with toasted pita squares.
Add the dressing right before serving or on the side.