Pre-heat the oven to 350F and spray a 10-inch pie dish with olive oil.
Beat the eggs, half-and-half, and salt in a bowl.
Pour the mixture into the pie dish.
Distribute the prosciutto, roasted garlic, mozzarella pearls, Parmigiano-Reggiano, tomatoes, and pesto on top. Sprinkle with freshly ground black pepper.
Bake for 40 minutes, but check on it after 30 minutes using a bamboo skewer or a toothpick to pierce the center of it. If it comes out dry or without visible egg lumps on it, it’s done. If not, give it 10 more minutes.
When done, take it out of the oven and let it sit for 5-10 minutes to puff down. Slice, and serve!