Z’Tejas Southwestern Grill at South Coast Plaza is introducing its new spring menu, announced Executive Chef Daniel Stevens. Lunchtime items include cilantro pesto chicken breast coated with pumpkin seeds, layered with sweet potato hash, spinach, artichokes and mushrooms and served with roasted poblano sauce for $12.25; and Grown Up Grilled Cheese, fresh brioche layered with Asadero and Parmesan…