Proto's Pizza | Denver is a $$ pizza spot with a 4.5 Google rating from 752 reviews and 1,139 all-time Blackbird check-ins. Its busiest Blackbird check-in days are Friday and Saturday.
Reviews point to thin crust, good vibes, warm service, and one reviewer mentions watching the chef make pizza in the back. The praise is specific: Caesar salad that earns a callout, the Angel pizza, Hula Pie with fresh pineapple and ham, plus desserts like tiramisu and cannoli.
One 4-star review calls the pizza good rather than overwhelming, but says the staff handled an order mix-up quickly and kindly. That may be the most useful read: thin-crust pizza, approachable pricing, and service that seems to matter.