Sauté garlic and red bell pepper, in olive oil, for about 3 minutes (just enough to"combine" the flavors). Put aside to cool.
In a bowl, combine Feta cheese, breadcrumbs, thyme, sun-dried tomatoes, and garlic and red pepper mixture. Toss until well mixed.
Lay a flattened piece of chicken breast on a cutting board or your counter and lightly season with salt & pepper. Put a 1/4 of the above mixture on the flattened chicken breast and roll.
Place rolled chicken breast seam side down in a baking dish sprayed with Pam. You can put any extra stuffing on top. Drizzle with olive oil.
Preheat oven to 350°F. Cook for about 35 minutes or until the internal temperature reaches 180°F. Garnish with chopped green onion and serve hot.