[noun] + に見える [na-adj] + に見える [i-adj 〜い → 〜く] + 見える
に見える means "to look", "to look like": it says how someone or something appears to you, whatever the truth turns out to be. It goes straight after a noun or a な-adjective. An い-adjective drops the に and changes 〜い to 〜く instead.
The impression can be wrong, and a following けど often says so.
A verb cannot take に見える directly. It needs ように first.
×おいしいに見える is wrong, but おいしそうにみえる見える is fine, because おいしそう works like a な-adjective.