preheat oven to 350. spray a single serving casserole dish with cooking spray. set aside.
in a blender, blend cherry tomatoes, thyme and garlic salt. spread on the bottom of the small, single serving casserole dish.
in a small frying pan, cook onion and bacon until bacon is cooked.
layer in dish as follows,tomato sauce, zucchini slice, 2 slices potato, i tablespoon cheese, 1/2 of the bacon and onion and repeat. zucchini slice, 2 slices potato, 1 tablespoon cheese, half the bacon and onion and top with remaining cheese.
bake at 350 for 45 minutes to 1 hour, until zucchini is cooked (fork tender). if your topping is getting to crispy then cover dish until it is completely cooked.