Toss prepared veggies together in 5 tsp of olive oil, season with salt & pepper.
Place on parchment lined sheet pan and roast until browned.
While vegetables are roasting, whisk together the tahini, water, lemon juice, 1 tsp of olive oil and salt & pepper to taste. Sauce can be made 2 days in advance.
To assemble: place the vegetables on a platter and drizzle with the tahini sauce.