Heat the oil in a medium skillet over medium-high heat. Put the flour in a shallow dish. Season the pork chop with salt and pepper. Dredge in the flour and add to the skillet. Cook until golden, about 5 minutes, then flip and cook to desired doneness, about 3 minutes more. Give the lemon half a good squeeze over the chop.
Next, add the cannellini beans and spinach to a medium skillet set over medium-high heat. Season with salt and pepper and cook, stirring occasionally, until the beans are warmed through and the spinach is just wilted, 3 to 4 minutes. Give the beans and spinach a good squeeze of the lemon half.
Serve the beans and spinach alongside the pork chop with the lemon wedges for squeezing over.