Fuck yes, you must use lots of cheese and double up on the pastry. I love it when every bite is so rich you have to take your time, even on one slice. God I want quiche so bad now.
English logic is nonexistent lol. We're Dutch's weird cousin who spent too long in France and wears a Latin trenchcoat.
This is why American (I'm sure Commonwealth countries too, not so sure about other Anglophones) children learn so many little rhymes and word games that make fun of how many exceptions there are to every rule.
Quiche is a French loanword which are always extra fucked.