small broccoli florets • olive oil, divided • kosher salt, divided • crushed red pepper • uncooked strozzapreti or mezze penne pasta • garlic cloves, thinly sliced • all-purpose flour • whole milk • feta cheese, crumbled (about 3/4 cup) • grated lemon rind • freshly ground black pepper • flaked sea salt (such as Maldon)
