Take another look at the sentence:
Cristie would have chose a less expensive dinner, but when she saw squid eyeball stew on the menu, she knew that she had found the perfect thing to eat.
Choose is an irregular verb; the chart below shows its forms.
|Verb||Simple Present||Simple Past||Past Participle|
Had found, the verb you chose, is perfectly correct. Before you continue, review the rules for irregular verbs.