Lemon Orzo with Sautéed Zucchini and Tomatoes

orzo 8 cups water 1 Tbsp. chicken bouillon granules 1 Tbsp. olive oil 1 large zucchini, chopped 12-15 cherry tomatoes, sliced in half 1 large shallot, sliced 1 clove garlic, minced 1 tsp. fresh thyme, minced 1 tbsp. lemon zest salt and pepper