The conspicuously red two-story house in Sellwood’s lazy downtown feels more residential than commercial: picnic tables in the small backyard are surrounded by unpainted fences and shrub, a tone walkway, and the bustle of families. So you’ll feel no guilt letting your kids (or dog) run free while you nosh on one of Muddy’s signature organic flour pizzas with pecorino cheese – pies that rival some of the best of Portland’s pizza pantheon.