TheFork users who ate in Rieti have said really good things about La botte, La Palazzina and Delicato. Maybe you should give them a try!
Some of the more popular Meat Cuisine restaurants that offer vegetarian options on their menu in Rieti according to TheFork users include:
La botte, with a 8.4 rating
La Palazzina, with a 9.1 rating
Delicato, with a 9.8 rating