01 -  Brush the zucchini, red bell pepper, and yellow squash slices with olive oil. Season both sides with salt and freshly ground black pepper. 
 02 -  Preheat a grill or grill pan over medium-high heat. Grill the seasoned vegetables for 3–4 minutes per side, or until tender and slightly charred. 
 03 -  Lay the tortillas flat. Evenly spread a quarter cup of hummus onto each tortilla, leaving a 1-inch border. 
 04 -  Arrange the grilled vegetables over the hummus layer. Roll each tortilla tightly to enclose the filling. 
 05 -  Slice each wrap in half and wrap in foil or parchment paper for ease of serving.