Preheat the oven to 400 F.
Drain the artichoke hearts, pat dry, and then quarter them.
In a small mixing bowl, make a lemon marinade by whisking together the olive oil, lemon juice, minced garlic and oregano.
Place the chicken breasts into a 9x13-inch baking dish and sprinkle with a little salt and pepper. Add the cherry tomatoes, quartered artichoke hearts and olives around the chicken pieces. Pour the lemon juice marinade over the top.
Bake in the preheated oven for 45 minutes, or until chicken is cooked through. Sprinkle Feta cheese crumbles onto warm chicken bake, so they soften up.
Prepare the salad.
Serve Greek Chicken Bake with salad.