Heat butter and olive oil until bubbly on medium heat. Add zucchini and onions and heat to combine. Add garlic, salt, and pepper and sauté until zucchini starts to brown and the onions are soft. Remove from heat. In a separate bowl, mix beaten eggs, spices, hot sauce, and crumbled goat cheese. Lay zucchini and onions in the bottom of a glass 9 x 9 pan. Pour eggs over the top. Lay tomato slices in rows across the top then sprinkle with fresh chives. Bake at 375° for approximately 30 minutes or until set and firm in the middle. Let cool for 10 minutes then slice into squares.