nobody offered Pitta a scholarship out of high school. Very few schools in fact expressed ANY interest. Pitta was shown interest by Dartmouth, Navy, Oklahoma State, Oregon, Utah, and Yale, but no Division I school offered him a scholarship.
Could have been a number of reasons for that, maybe he didn't have a lot of film to send to coaches, maybe he didn't attend many if any camps, he was an Eagle Scout and an honor student maybe he spent a lot of time hitting the books, who knows. But the fact remains, nobody in the country thought he was worth offering a scholarship or even putting much effort into recruiting.
Crowton was smart enough and a good enough evaluator of talent to bring him in on a preferred walk-on basis, move him to a position he could succeed at (TE) and then when he proved it on the field, give him a scholarship.