My ILE-Ti brother is exactly like that: refusing to try new foods, sticking to his red meat and sweets. No idea how to really make food for himself (could be an SP blindspot thing), he could just eat cereals all day and burgers from fast food restaurants. He wouldn't eat anything else if our ESE mother didn't make him food.
The LIE-Ni I know is somewhat similar in that regard, considering the
Vulnerable function is as weak as the Dual-Seeking one, it should be expected that certain behaviourisms overlap in that manner.