It seems that the substrate may contain pine bark mulch. Is there a relatively strong pine scent from the substrate? If this is the case, omit the pine bark and place it temporarily on a non-reactive substrate (paper towel, 'flat' cloth towel, newspaper or cypress that has aired in the sun until there is no odor...). The compounds present in the pine may be more of an irritant than the tort can withstand leading to the closed eyes and lack of appetite (and probably difficulty breathing).
As far as enticing it to eat, once it has had several hours to breathe 'fresh' air, offer a little mango (fruit, not bell pepper).
As far as enticing it to eat, once it has had several hours to breathe 'fresh' air, offer a little mango (fruit, not bell pepper).