Instructions:
Preheat the oven to 375°F (190°C). Grease a pie dish and set aside.
Heat olive oil in a large skillet over medium heat. Add diced onion and minced garlic, and cook until soft and fragrant.
Add diced red and yellow bell peppers to the skillet, and cook until they begin to soften.
Add diced zucchini and eggplant to the skillet, and cook until tender.
Stir in cherry tomatoes, dried oregano, dried basil, salt, and pepper. Cook for an additional 2-3 minutes.
Remove skillet from heat and let the vegetable mixture cool slightly.
Once cooled, gently fold in crumbled feta cheese until evenly distributed.
Roll out pie crust and line the greased pie dish with it, trimming any excess dough.
Pour the Mediterranean vegetable filling into the prepared pie crust, spreading it out evenly.
Place the pie dish in the preheated oven and bake for 25-30 minutes, or until the crust is golden brown and the filling is bubbly.
Remove the vegetable pie from the oven and let it cool for a few minutes before slicing and serving.