Continuity mistake: When Eko finds the "priest" on the ground, his white clerical collar is properly on. In "Duex Ex Machina" when Locke causes the skeleton of the Nigerian "priest" to fall from the tree, the collar comes undone, and the clergy shirt is rumpled.
Continuity mistake: In the scene where Eko is walking up to the church and the woman tells him if he buys a statue the money will pay for a polio vaccine for the village, he is wearing an earring in his right ear. Once inside the church talking to his brother, his is wearing the earring in his left ear.
Answer: He was eating a peice of an orange with the skin still on.
XIII