Looks like the form field input tags are at present placed inside label tags (should be outside of the same). Anyway, you can resolve this by having this custom CSS in theme options Custom CSS tab which will make the form style look closer to your current theme –
.contact-form label, .wpcf7-form label { text-transform: none; display: block;}
#content .contact-form p, #content .wpcf7-form p {display: block; width: auto;}
#content .contact-form input[type=text], #content .contact-form input[type=tel], #content .contact-form input[type=url], #content .contact-form input[type=email], #content .contact-form input[type=number], #content .contact-form input[type=range], #content .contact-form textarea, #content .wpcf7-form input[type=text], #content .wpcf7-form input[type=tel], #content .wpcf7-form input[type=url], #content .wpcf7-form input[type=email], #content .wpcf7-form input[type=number], #content .wpcf7-form input[type=range], #content .wpcf7-form textarea {
width: auto;
}