Preheat oven to broil setting. In a bowl, whisk together eggs, heavy cream, feta, olives, garlic powder, pepper, and salt.
Heat a non-stick, oven safe skillet over medium-high heat. Add ghee or butter to skillet and melt. Add tomato and spinach and cook down for approx 2 to 3 minutes.
Pour egg mixture into skillet and stir with {rubber} spatula. Cook for 4 to 5 minutes or until the egg mixture has set on the bottom and begins to set up on top, but still a little runny on top.
Place pan into oven and broil for 4 to 5 minutes, until lightly browned and fluffy. Remove from broiler, and top with additional feta and olives, if desired.