Preheat the oven to 400˚F or 200˚C. When preheated, pop the crust (in a pie plate and weighted down with dry beans or pie weights if you have them) in the oven for 5 minutes. Remove from the oven.
Heat cooking oil over medium-high heat. Saute onion for 2 minutes, add garlic and cook for 2 minutes more.
Add bell pepper, zucchini, and carrots. Cook them on medium-high heat until vegetables are tender and crisp, stir often.
Add the tomatoes and spinach and stir to combine. Remove from heat. Season with salt and pepper to taste.
Whisk together the milk, eggs, cheese, rosemary, paprika powder, thyme, oregano, salt, and pepper.
Add the egg mixture to the vegetable mix. Stir well.
Pour into cooled pie crust and bake at 400˚F or 200˚C for 35-40 minutes or until set. Let it stand 10 minutes before serving.
Serve with a green salad on the side. Add a little lime/lemon juice and black pepper if desired.