James is correct.
There is another way to say it.
"If there is food involved, he never misses it."
"If there is food involved, he never refuses it."
The reason "miss" should be "misses" is because the word "involved" is past tense. "Involved" is the past tense of involve. Therefore, if the situation is in the past "he" (the noun) never misses (past tense) it. :)
I hope this helps!