Why does Orlando stop everyone from eating?

Orlando rushes in and cries out, "Forbear, and eat no more!" (2.7.88). He orders the men to give him food. The Duke politely bids Orlando to sit down and join them. He is taken aback by the Dukes reply and comments, "Pardon me, I pray you. / I thought that all things had been savage here" (2.7.105-106). Orlando then asks them to wait for him to get Adam so the old man may eat first. The Duke tells him they will not touch any of the food until he returns.